Silanes

<p>dimethoxysilylmethylpropyl modified (polyethylenimine)<br>Polyamino hydrophilic dialkoxysilanePrimer for brassViscosity: 100-200 cSt~20% of nitrogens substituted50% in isopropanol<br></p>

<p>Trialkylsilyl Blocking Agent<br>Used as a protecting group for reactive hydrogens in alcohols, amines, thiols, and carboxylic acids. Organosilanes are hydrogen-like, can be introduced in high yield, and can be removed under selective conditions. They are stable over a wide range of reaction conditions and can be removed in the presence of other functional groups, including other protecting groups. The tolerance of silylated alcohols to chemical transformations summary is presented in Table 1 of the Silicon-Based Blocking Agents brochure.<br>Alkyl Silane - Conventional Surface Bonding<br>Aliphatic, fluorinated aliphatic or substituted aromatic hydrocarbon substituents are the hydrophobic entities which enable silanes to induce surface hydrophobicity. The organic substitution of the silane must be non-polar. The hydrophobic effect of the organic substitution can be related to the free energy of transfer of hydrocarbon molecules from an aqueous phase to a homogeneous hydrocarbon phase. A successful hydrophobic coating must eliminate or mitigate hydrogen bonding and shield polar surfaces from interaction with water by creating a non-polar interphase. Although silane and silicone derived coatings are in general the most hydrophobic, they maintain a high degree of permeability to water vapor. This allows coatings to breathe and reduce deterioration at the coating interface associated with entrapped water. Since ions are not transported through non-polar silane and silicone coatings, they offer protection to composite structures ranging from pigmented coatings to rebar reinforced concrete. A selection guide for hydrophobic silanes can be found on pages 22-31 of the Hydrophobicity, Hydrophilicity and Silane Surface Modification brochure.<br>3,3-Dimethylbutyldimethylchlorosilane; Neohexyldimethylchlorosilane<br>Sterically hindered neohexylchlorosilane protecting groupBlocking agent, forms bonded phases for HPLCSummary of selective deprotection conditions is provided in Table 7 through Table 20 of the Silicon-Based Blocking Agents brochure<br></p>

<p>N-(2-Aminoethyl)-11-aminoundecyltrimethoxysilane<br>Diamino functional trialkoxy silanePrimary amine and an internal secondary amineUsed in microparticle surface modificationCoupling agent with extended spacer-group for remote substrate binding in UV cure and epoxy systemsLong chain analog of SIA0591.1<br></p>

<p>Quaternary Amino Functional Trialkoxy Silane<br>Silane coupling agents have the ability to form a durable bond between organic and inorganic materials to generate desired heterogeneous environments or to incorporate the bulk properties of different phases into a uniform composite structure. The general formula has two classes of functionality. The hydrolyzable group forms stable condensation products with siliceous surfaces and other oxides such as those of aluminum, zirconium, tin, titanium, and nickel. The organofunctional group alters the wetting or adhesion characteristics of the substrate, utilizes the substrate to catalyze chemical transformations at the heterogeneous interface, orders the interfacial region, or modifies its partition characteristics, and significantly effects the covalent bond between organic and inorganic materials.<br>Octadecyldimethyl(3-trimethoxysilylpropyl)ammonium chloride; (trimethoxysilylpropyl)octadecyldimethylammonium chloride; dimethyloctadecyl[3-(trimethoxysilyl)propyl]ammonium chloride<br>Employed as a glass lubricantOrients liquid crystalsProvides an antistatic surface coatingDispersion/coupling agent for high density magnetic recording media60% in methanolContains 3-5% Cl(CH2)3Si(OMe)3<br></p>

<p>carboxyethylsilanetriol, disodium salt; 3-trihydroxysilylpropanoic acid, disodium salt<br>Carboxylate functional trihydroxy silaneUsed in combination with aminofunctional silanes to form amphoteric silicaspH: 12 - 12.525% in waterUsed in microparticle surface modification<br></p>

<p>Phenyl-Containing Blocking Agent<br>Used as a protecting group for reactive hydrogens in alcohols, amines, thiols, and carboxylic acids. Organosilanes are hydrogen-like, can be introduced in high yield, and can be removed under selective conditions. They are stable over a wide range of reaction conditions and can be removed in the presence of other functional groups, including other protecting groups. The tolerance of silylated alcohols to chemical transformations summary is presented in Table 1 of the Silicon-Based Blocking Agents brochure.<br>Aromatic Silane - Conventional Surface Bonding<br>Aliphatic, fluorinated aliphatic or substituted aromatic hydrocarbon substituents are the hydrophobic entities which enable silanes to induce surface hydrophobicity. The organic substitution of the silane must be non-polar. The hydrophobic effect of the organic substitution can be related to the free energy of transfer of hydrocarbon molecules from an aqueous phase to a homogeneous hydrocarbon phase. A successful hydrophobic coating must eliminate or mitigate hydrogen bonding and shield polar surfaces from interaction with water by creating a non-polar interphase. Although silane and silicone derived coatings are in general the most hydrophobic, they maintain a high degree of permeability to water vapor. This allows coatings to breathe and reduce deterioration at the coating interface associated with entrapped water. Since ions are not transported through non-polar silane and silicone coatings, they offer protection to composite structures ranging from pigmented coatings to rebar reinforced concrete. A selection guide for hydrophobic silanes can be found on pages 22-31 of the Hydrophobicity, Hydrophilicity and Silane Surface Modification brochure.<br>Diphenylmethyl(dimethylamino)silane; N,N,1-Trimethyl-1,1-diphenylsilanamine<br>More reactive than SID4552.0Liberates dimethylamine upon reactionSummary of selective deprotection conditions is provided in Table 7 through Table 20 of the Silicon-Based Blocking Agents brochure<br></p>

<p>Alkyl Silane - Conventional Surface Bonding<br>Aliphatic, fluorinated aliphatic or substituted aromatic hydrocarbon substituents are the hydrophobic entities which enable silanes to induce surface hydrophobicity. The organic substitution of the silane must be non-polar. The hydrophobic effect of the organic substitution can be related to the free energy of transfer of hydrocarbon molecules from an aqueous phase to a homogeneous hydrocarbon phase. A successful hydrophobic coating must eliminate or mitigate hydrogen bonding and shield polar surfaces from interaction with water by creating a non-polar interphase. Although silane and silicone derived coatings are in general the most hydrophobic, they maintain a high degree of permeability to water vapor. This allows coatings to breathe and reduce deterioration at the coating interface associated with entrapped water. Since ions are not transported through non-polar silane and silicone coatings, they offer protection to composite structures ranging from pigmented coatings to rebar reinforced concrete. A selection guide for hydrophobic silanes can be found on pages 22-31 of the Hydrophobicity, Hydrophilicity and Silane Surface Modification brochure.<br>Dimethyldiethoxysilane; Diethoxydimethylsilane<br>Viscosity: 0.53 cStVapor pressure, 25 °C: 15 mmΔHcomb: -4,684 kJ/molΔHform: 837 kJ/molΔHvap: 41.0 kJ/molDipole moment: 1.39 debyeVapor pressure, 25 °C: 15 mmCoefficient of thermal expansion: 1.3 x 10-3Hydrophobic surface treatment and release agentDialkoxy silane<br></p>

<p>Hexamethyldisilane; HMD; 2,2,3,3-Tetramethyl-2,3-disilabutane<br>Viscosity: 1.0 cStΔHcomb: 5,909 kJ/molΔHform: -494 kJ/molΔHvap: 39.8 kJ/molVapor pressure, 20 °C: 22.9 mmEa decomposition at 545 K: 337 kJ/molRotational barrier, Si–Si: 4.40 kJ/molSecondary NMR reference: δ = 0.045Source for trimethylsilyl anionReplaces aromatic nitriles with TMS groups in presence of [RhCl(cod)]2Precursor for CVD of silicon carbideBrings about the homocoupling of arenesulfonyl chlorides in the presence of Pd2(dba)3Used as a solvent for the direct borylation of fluoroaromaticsReacts with alkynes to form silolesUndergoes the silylation of acid chlorides to give acylsilanes<br></p>

<p>Fluorinated Alkyl Silane - Conventional Surface Bonding<br>Aliphatic, fluorinated aliphatic or substituted aromatic hydrocarbon substituents are the hydrophobic entities which enable silanes to induce surface hydrophobicity. The organic substitution of the silane must be non-polar. The hydrophobic effect of the organic substitution can be related to the free energy of transfer of hydrocarbon molecules from an aqueous phase to a homogeneous hydrocarbon phase. A successful hydrophobic coating must eliminate or mitigate hydrogen bonding and shield polar surfaces from interaction with water by creating a non-polar interphase. Although silane and silicone derived coatings are in general the most hydrophobic, they maintain a high degree of permeability to water vapor. This allows coatings to breathe and reduce deterioration at the coating interface associated with entrapped water. Since ions are not transported through non-polar silane and silicone coatings, they offer protection to composite structures ranging from pigmented coatings to rebar reinforced concrete. A selection guide for hydrophobic silanes can be found on pages 22-31 of the Hydrophobicity, Hydrophilicity and Silane Surface Modification brochure.<br>Perfluorooctylethyl triethoxysilane; (1H,1H,2H,2H-Perfluorodecyl)triethoxysilane; Triethoxy(3,3,4,4,5,5,6,6,7,7,8,8,9,9,10,10,10-heptadecafluorodecyl)silane<br>Packaged over copper powderHydrolysis in combination with polydimethoxysiloxane gives hard hydrophobic coatingsTrialkoxy silane<br></p>

<p>N-(2-Aminoethyl)-3-aminopropyltrimethoxysilane, N-[3-(trimethoxysilyl)prpyl]ethylenediamine, DAMO<br>Diamino functional trialkoxy silaneViscosity: 6.5 cStγc of treated surfaces: 36.5 mN/mSpecific wetting surface: 358 m2/gCoefficient of thermal expansion: 0.8x10-3Coupling agent for polyamides, polycarbonates (e.g. in CDs), polyesters and copper/brass adhesionFilm-forming coupling agent/primer, berglass size componentFor cyclic version: SID3543.0 For pre-hydrolyzed version: SIA0590.0 Used in the immobilization of copper (II) catalyst on silicaUsed together w/ SID3396.0 to anchor PdCl2 catalyst to silica for acceleration of the Tsuji-Trost reaction in the allylation of nucleophilesDetermined by TGA a 25% weight loss of dried hydrolysates at 390 °C&Tab;For technical grade see SIA0591.0 Shorter chain analog of SIA0595.0Available as a cohydrolysate with n-propyltrimethoxysilane (SIP6918.0) ; see SIA0591.3<br></p>

<p>Alkyl Silane - Conventional Surface Bonding<br>Aliphatic, fluorinated aliphatic or substituted aromatic hydrocarbon substituents are the hydrophobic entities which enable silanes to induce surface hydrophobicity. The organic substitution of the silane must be non-polar. The hydrophobic effect of the organic substitution can be related to the free energy of transfer of hydrocarbon molecules from an aqueous phase to a homogeneous hydrocarbon phase. A successful hydrophobic coating must eliminate or mitigate hydrogen bonding and shield polar surfaces from interaction with water by creating a non-polar interphase. Although silane and silicone derived coatings are in general the most hydrophobic, they maintain a high degree of permeability to water vapor. This allows coatings to breathe and reduce deterioration at the coating interface associated with entrapped water. Since ions are not transported through non-polar silane and silicone coatings, they offer protection to composite structures ranging from pigmented coatings to rebar reinforced concrete. A selection guide for hydrophobic silanes can be found on pages 22-31 of the Hydrophobicity, Hydrophilicity and Silane Surface Modification brochure.<br>Methyltrichlorosilane; Trichloromethylsilane; Trichlorosilylmethane<br>Viscosity: 0.46 cStΔHvap: 31.0 kJ/molSurface tension: 20.3 mN/mIonization potential: 11.36 eVSpecific heat: 0.92 J/g/°Vapor pressure, 13.5 °C: 100 mmCritical temperature: 243 °CCritical pressure: 39 atmCoefficient of thermal expansion: 1.3 x 10-3Fundamental builing-block for silicone resinsForms silicon carbide by pyrolysisIn a synergistic fashion with boron trifluoride etherate catalyzes the crossed imino aldehyde pinacol couplingIn combination with H2 forms SiC by CVDStandard grade available, SIM6520.0<br></p>

<p>Alkyl Silane - Conventional Surface Bonding<br>Aliphatic, fluorinated aliphatic or substituted aromatic hydrocarbon substituents are the hydrophobic entities which enable silanes to induce surface hydrophobicity. The organic substitution of the silane must be non-polar. The hydrophobic effect of the organic substitution can be related to the free energy of transfer of hydrocarbon molecules from an aqueous phase to a homogeneous hydrocarbon phase. A successful hydrophobic coating must eliminate or mitigate hydrogen bonding and shield polar surfaces from interaction with water by creating a non-polar interphase. Although silane and silicone derived coatings are in general the most hydrophobic, they maintain a high degree of permeability to water vapor. This allows coatings to breathe and reduce deterioration at the coating interface associated with entrapped water. Since ions are not transported through non-polar silane and silicone coatings, they offer protection to composite structures ranging from pigmented coatings to rebar reinforced concrete. A selection guide for hydrophobic silanes can be found on pages 22-31 of the Hydrophobicity, Hydrophilicity and Silane Surface Modification brochure.<br>Methyltrimethoxysilane; Trimethoxymethylsilane; Trimethoxysilylmethane<br>Viscosity: 0.50 cStΔHcomb: 4,780 kJ/molDipole moment: 1.60 debyeIntermediate for coating resinsAlkoxy crosslinker for condensation cure siliconesTrialkoxy silaneHigher purity grade available, SIM6560.1<br></p>

<p>Olefin Functional Trialkoxy Silane<br>Silane coupling agents have the ability to form a durable bond between organic and inorganic materials to generate desired heterogeneous environments or to incorporate the bulk properties of different phases into a uniform composite structure. The general formula has two classes of functionality. The hydrolyzable group forms stable condensation products with siliceous surfaces and other oxides such as those of aluminum, zirconium, tin, titanium, and nickel. The organofunctional group alters the wetting or adhesion characteristics of the substrate, utilizes the substrate to catalyze chemical transformations at the heterogeneous interface, orders the interfacial region, or modifies its partition characteristics, and significantly effects the covalent bond between organic and inorganic materials.<br>Allyltriethoxysilane; 3-(Triethoxysilyl)-1-propene; Triethoxyallylsilane; Propenyltriethoxysilane<br>Dipole moment: 1.79 debyeVapor pressure, 100 °: 50 mmExtensive review on the use in silicon-based cross-coupling reactionsComonomer for polyolefin polymerizationUsed in microparticle surface modificationAdhesion promoter for vinyl-addition silicones<br></p>

<p>Monoamine Functional Trialkoxy Silane<br>Silane coupling agents have the ability to form a durable bond between organic and inorganic materials to generate desired heterogeneous environments or to incorporate the bulk properties of different phases into a uniform composite structure. The general formula has two classes of functionality. The hydrolyzable group forms stable condensation products with siliceous surfaces and other oxides such as those of aluminum, zirconium, tin, titanium, and nickel. The organofunctional group alters the wetting or adhesion characteristics of the substrate, utilizes the substrate to catalyze chemical transformations at the heterogeneous interface, orders the interfacial region, or modifies its partition characteristics, and significantly effects the covalent bond between organic and inorganic materials.<br>3-Aminopropyltriethoxysilane, ?-Aminopropyltriethoxysilane, Triethoxysilylpropylamine, APTES, AMEO, GAPS, A-1100<br>Viscosity: 1.6 cSt?Hvap: 11.8 kcal/molTreated surface contact angle, water: 59°?c of treated surfaces: 37.5 mN/mSpecific wetting surface: 353 m2/gVapor pressure, 100 °C: 10 mmWidely used coupling agent for phenolic, epoxy, polyamide, and polycarbonate resinsUsed to bind Cu(salicylaldimine) to silicaEffects immobilization of enzymesUsed in microparticle surface modificationBase silane in SIVATE A610 and SIVATE E610Low fluorescence grade for high throughput screening available as SIA0610.1<br></p>

<p>ALD Material<br>Atomic layer deposition (ALD) is a chemically self-limiting deposition technique that is based on the sequential use of a gaseous chemical process. A thin film (as fine as -0.1 Å per cycle) results from repeating the deposition sequence as many times as needed to reach a certain thickness. The major characteristic of the films is the resulting conformality and the controlled deposition manner. Precursor selection is key in ALD processes, namely finding molecules which will have enough reactivity to produce the desired films yet are stable enough to be handled and safely delivered to the reaction chamber.<br>Octamethylcyclotetrasiloxane; D4; Cyclic tetramer; Cyclomethicone; Cyclohexasiloxane; Cyclotetrasiloxane; OMCTS<br>Viscosity: 2.3 cStΔHfus: 18.4 kJ/molΔHvap: 45.6 kJ/molDipole moment: 1.09 debyeVapor pressure, 23 °C: 1 mmDielectric constant: 2.39Ring strain: 1.00 kJ/molSurface tension, 20 °C: 17.9 mN/mCritical temperature: 314 °CCritical pressure: 1.03 mPaSpecific heat: 502 J/g/°Coefficient of thermal expansion: 0.8 x 10-3Cryoscopic constant: 11.2Henry’s law constant, Hc: 3.4 ± 1.7Ea, polym: 79 kJ/molOctanol/water partition coefficient, log Kow: 5.1Basic building block for silicones by ring-opening polymerizationSolubility, water: 50 ?g/l<br></p>

<p>Alkenylsilane Cross-Coupling Agent<br>The cross-coupling reaction is a highly useful methodology for the formation of carbon-carbon bonds. It involves two reagents, with one typically being a suitable organometallic reagent - the nucleophile - and the other a suitable organic substrate, normally an unsaturated halide, tosylate or similar - the electrophile.<br>1,3,5,7-Tetravinyl-1,3,5,7-tetramethylcyclotetrasiloxane; Methylvinylcyclosiloxane; Tetramethyltetravinylcyclotetrasiloxane; Tetramethyltetraethenylcyclotetrasiloxane<br>Viscosity: 3.9 cStExcellent and inexpensive reagent for vinylations in cross-coupling reactions for the formation of styrenes and dienesUndergoes ring-opening polymerizationModifier for Pt-catalyst in 2-component RTVsCore molecule for dendrimersExtensive review of silicon based cross-coupling agents: Denmark, S. E. et al. "Organic Reactions, Volume 75" Denmark, S. E. ed., John Wiley and Sons, 233, 2011<br></p>

<p>Alkyl Silane - Conventional Surface Bonding<br>Aliphatic, fluorinated aliphatic or substituted aromatic hydrocarbon substituents are the hydrophobic entities which enable silanes to induce surface hydrophobicity. The organic substitution of the silane must be non-polar. The hydrophobic effect of the organic substitution can be related to the free energy of transfer of hydrocarbon molecules from an aqueous phase to a homogeneous hydrocarbon phase. A successful hydrophobic coating must eliminate or mitigate hydrogen bonding and shield polar surfaces from interaction with water by creating a non-polar interphase. Although silane and silicone derived coatings are in general the most hydrophobic, they maintain a high degree of permeability to water vapor. This allows coatings to breathe and reduce deterioration at the coating interface associated with entrapped water. Since ions are not transported through non-polar silane and silicone coatings, they offer protection to composite structures ranging from pigmented coatings to rebar reinforced concrete. A selection guide for hydrophobic silanes can be found on pages 22-31 of the Hydrophobicity, Hydrophilicity and Silane Surface Modification brochure.<br>Adamantylethyltrichlorosilane; Trichlorosilylethyladamantane; Trichloro(2-tricyclo[3.3.1.13,7]decylethyl)silane<br>Contains approximately 25% α-isomerForms silica bonded phases for reverse phase chromatography<br></p>

<p>Alkyl Silane - Conventional Surface Bonding<br>Aliphatic, fluorinated aliphatic or substituted aromatic hydrocarbon substituents are the hydrophobic entities which enable silanes to induce surface hydrophobicity. The organic substitution of the silane must be non-polar. The hydrophobic effect of the organic substitution can be related to the free energy of transfer of hydrocarbon molecules from an aqueous phase to a homogeneous hydrocarbon phase. A successful hydrophobic coating must eliminate or mitigate hydrogen bonding and shield polar surfaces from interaction with water by creating a non-polar interphase. Although silane and silicone derived coatings are in general the most hydrophobic, they maintain a high degree of permeability to water vapor. This allows coatings to breathe and reduce deterioration at the coating interface associated with entrapped water. Since ions are not transported through non-polar silane and silicone coatings, they offer protection to composite structures ranging from pigmented coatings to rebar reinforced concrete. A selection guide for hydrophobic silanes can be found on pages 22-31 of the Hydrophobicity, Hydrophilicity and Silane Surface Modification brochure.<br>Dimethyldimethoxysilane; DMDMOS; Dimethoxydimethylsilane<br>Viscosity, 20 °: 0.44 cStΔHcomb: 3,483 kJ/molΔHform: 716 kJ/molDipole moment: 1.33 debyeVapor pressure, 36 °C: 100 mmCoefficient of thermal expansion: 1.3 x 10-3Provides hydrophobic surface treatments in vapor phase applicationsDialkoxy silane<br></p>

<p>Alkyl Silane - Conventional Surface Bonding<br>Aliphatic, fluorinated aliphatic or substituted aromatic hydrocarbon substituents are the hydrophobic entities which enable silanes to induce surface hydrophobicity. The organic substitution of the silane must be non-polar. The hydrophobic effect of the organic substitution can be related to the free energy of transfer of hydrocarbon molecules from an aqueous phase to a homogeneous hydrocarbon phase. A successful hydrophobic coating must eliminate or mitigate hydrogen bonding and shield polar surfaces from interaction with water by creating a non-polar interphase. Although silane and silicone derived coatings are in general the most hydrophobic, they maintain a high degree of permeability to water vapor. This allows coatings to breathe and reduce deterioration at the coating interface associated with entrapped water. Since ions are not transported through non-polar silane and silicone coatings, they offer protection to composite structures ranging from pigmented coatings to rebar reinforced concrete. A selection guide for hydrophobic silanes can be found on pages 22-31 of the Hydrophobicity, Hydrophilicity and Silane Surface Modification brochure.<br>n-Octyldimethylchlorosilane; Dimethyloctylchlorosilane; Chlorodimethyloctylsilane<br></p>

<p>Alkyl Silane - Dipodal Surface Bonding<br>Aliphatic, fluorinated aliphatic or substituted aromatic hydrocarbon substituents are the hydrophobic entities which enable silanes to induce surface hydrophobicity. The organic substitution of the silane must be non-polar. The hydrophobic effect of the organic substitution can be related to the free energy of transfer of hydrocarbon molecules from an aqueous phase to a homogeneous hydrocarbon phase. A successful hydrophobic coating must eliminate or mitigate hydrogen bonding and shield polar surfaces from interaction with water by creating a non-polar interphase. Although silane and silicone derived coatings are in general the most hydrophobic, they maintain a high degree of permeability to water vapor. This allows coatings to breathe and reduce deterioration at the coating interface associated with entrapped water. Since ions are not transported through non-polar silane and silicone coatings, they offer protection to composite structures ranging from pigmented coatings to rebar reinforced concrete. A selection guide for hydrophobic silanes can be found on pages 22-31 of the Hydrophobicity, Hydrophilicity and Silane Surface Modification brochure.<br>Bridging Silicon-Based Blocking Agent<br>Used as a protecting group for reactive hydrogens in alcohols, amines, thiols, and carboxylic acids. Organosilanes are hydrogen-like, can be introduced in high yield, and can be removed under selective conditions. They are stable over a wide range of reaction conditions and can be removed in the presence of other functional groups, including other protecting groups. The tolerance of silylated alcohols to chemical transformations summary is presented in Table 1 of the Silicon-Based Blocking Agents brochure.<br>Dipodal Silane<br>Dipodal silanes are a series of adhesion promoters that have intrinsic hydrolytic stabilities up to ~10,000 times greater than conventional silanes and are used in applications such as plastic optics, multilayer printed circuit boards and as adhesive primers for ferrous and nonferrous metals. They have the ability to form up to six bonds to a substrate compared to conventional silanes with the ability to form only three bonds to a substrate. Many conventional coupling agents are frequently used in combination with 10-40% of a non-functional dipodal silane, where the conventional coupling agent provides the appropriate functionality for the application, and the non-functional dipodal silane provides increased durability. Also known as bis-silanes additives enhance hydrolytic stability, which impacts on increased product shelf life, ensures better substrate bonding and also leads to improved mechanical properties in coatings as well as composite applications.<br>Bis(dimethylchlorosilyl)ethane; Tetramethyldichlorodisilethylene; Ethylenebis[chlorodimethylsilane]; STABASE-Cl<br>Protection for 1° amines, including amino acid estersSummary of selective deprotection conditions is provided in Table 7 through Table 20 of the Silicon-Based Blocking Agents brochure<br></p>

<p>Alkyl Silane - Conventional Surface Bonding<br>Aliphatic, fluorinated aliphatic or substituted aromatic hydrocarbon substituents are the hydrophobic entities which enable silanes to induce surface hydrophobicity. The organic substitution of the silane must be non-polar. The hydrophobic effect of the organic substitution can be related to the free energy of transfer of hydrocarbon molecules from an aqueous phase to a homogeneous hydrocarbon phase. A successful hydrophobic coating must eliminate or mitigate hydrogen bonding and shield polar surfaces from interaction with water by creating a non-polar interphase. Although silane and silicone derived coatings are in general the most hydrophobic, they maintain a high degree of permeability to water vapor. This allows coatings to breathe and reduce deterioration at the coating interface associated with entrapped water. Since ions are not transported through non-polar silane and silicone coatings, they offer protection to composite structures ranging from pigmented coatings to rebar reinforced concrete. A selection guide for hydrophobic silanes can be found on pages 22-31 of the Hydrophobicity, Hydrophilicity and Silane Surface Modification brochure.<br>Methyltriacetoxysilane; Methylsilane Triacetate; Triacetoxymethylsilane; MTAC<br>Vapor pressure, 94 °C: 9 mmMost common cross-linker for condensation cure silicone RTVsFor liquid version see blend, SIM6519.2<br></p>

<p>Monoamino Functional Trialkoxy Silane<br>Silane coupling agents have the ability to form a durable bond between organic and inorganic materials to generate desired heterogeneous environments or to incorporate the bulk properties of different phases into a uniform composite structure. The general formula has two classes of functionality. The hydrolyzable group forms stable condensation products with siliceous surfaces and other oxides such as those of aluminum, zirconium, tin, titanium, and nickel. The organofunctional group alters the wetting or adhesion characteristics of the substrate, utilizes the substrate to catalyze chemical transformations at the heterogeneous interface, orders the interfacial region, or modifies its partition characteristics, and significantly effects the covalent bond between organic and inorganic materials.<br>3-(m-Aminophenoxy)propyltrimethoxysilane; m-[3-(Trimethoxysilyl)propoxy]aniline; 4-[3-(Trimethoxysilyl)propoxy]-benzenamine<br>Primary amine coupling agent for UV cure and epoxy systemsUsed in microparticle surface modificationAmber liquidHigh temperature coupling agent<br></p>

<p>Bridging Silicon-Based Blocking Agent<br>Used as a protecting group for reactive hydrogens in alcohols, amines, thiols, and carboxylic acids. Organosilanes are hydrogen-like, can be introduced in high yield, and can be removed under selective conditions. They are stable over a wide range of reaction conditions and can be removed in the presence of other functional groups, including other protecting groups. The tolerance of silylated alcohols to chemical transformations summary is presented in Table 1 of the Silicon-Based Blocking Agents brochure.<br>Alkyl Silane - Conventional Surface Bonding<br>Aliphatic, fluorinated aliphatic or substituted aromatic hydrocarbon substituents are the hydrophobic entities which enable silanes to induce surface hydrophobicity. The organic substitution of the silane must be non-polar. The hydrophobic effect of the organic substitution can be related to the free energy of transfer of hydrocarbon molecules from an aqueous phase to a homogeneous hydrocarbon phase. A successful hydrophobic coating must eliminate or mitigate hydrogen bonding and shield polar surfaces from interaction with water by creating a non-polar interphase. Although silane and silicone derived coatings are in general the most hydrophobic, they maintain a high degree of permeability to water vapor. This allows coatings to breathe and reduce deterioration at the coating interface associated with entrapped water. Since ions are not transported through non-polar silane and silicone coatings, they offer protection to composite structures ranging from pigmented coatings to rebar reinforced concrete. A selection guide for hydrophobic silanes can be found on pages 22-31 of the Hydrophobicity, Hydrophilicity and Silane Surface Modification brochure.<br>Diisopropyldichlorosilane; Dichlorobis(1-methylethyl)silane; DIPS<br>Forms bis(blocked) or tethered alcoholsUsed as tether in ring-closing-metathesis (RCM) reactionThe bifunctional nature of the reagent allows for the templating of diverse groups in intermolecular reactions and ring formationProtects 3’,5’ hydroxyls of nucleosides, but less effectively than SIT7273.0Forms tethered silyl ethers from diolsSummary of selective deprotection conditions is provided in Table 7 through Table 20 of the Silicon-Based Blocking Agents brochure<br></p>

<p>Arylsilane Cross-Coupling Agent<br>The cross-coupling reaction is a highly useful methodology for the formation of carbon-carbon bonds. It involves two reagents, with one typically being a suitable organometallic reagent - the nucleophile - and the other a suitable organic substrate, normally an unsaturated halide, tosylate or similar - the electrophile.<br>Aromatic Silane - Conventional Surface Bonding<br>Aliphatic, fluorinated aliphatic or substituted aromatic hydrocarbon substituents are the hydrophobic entities which enable silanes to induce surface hydrophobicity. The organic substitution of the silane must be non-polar. The hydrophobic effect of the organic substitution can be related to the free energy of transfer of hydrocarbon molecules from an aqueous phase to a homogeneous hydrocarbon phase. A successful hydrophobic coating must eliminate or mitigate hydrogen bonding and shield polar surfaces from interaction with water by creating a non-polar interphase. Although silane and silicone derived coatings are in general the most hydrophobic, they maintain a high degree of permeability to water vapor. This allows coatings to breathe and reduce deterioration at the coating interface associated with entrapped water. Since ions are not transported through non-polar silane and silicone coatings, they offer protection to composite structures ranging from pigmented coatings to rebar reinforced concrete. A selection guide for hydrophobic silanes can be found on pages 22-31 of the Hydrophobicity, Hydrophilicity and Silane Surface Modification brochure.<br>Phenyltriethoxysilane; Triethoxysilylbenzene; Triethoxy(phenyl)silane<br>Viscosity, 25 °C: 1.7 cStDipole moment: 1.85 debyeSurface tension: 28 mN/mDielectric constant: 4.12Vapor pressure, 75 °C: 1 mmCoefficient of thermal expansion: 0.9 x 10-3Improves photoresist adhesion to silicon nitrideElectron donor component of polyolefin polymerization catalyst complexesEffective treatment for organic-grafted claysPhenylates allyl benzoatesCross-couples with aryl bromides without amine or phosphineligandsPhenylates allyl acetatesβ-phenylates enones under aqueous base conditionsExtensive review of silicon based cross-coupling agents: Denmark, S. E. et al. "Organic Reactions, Volume 75"Denmark, S. E. ed., John Wiley and Sons, 233, 2011<br></p>

<p>N-(triethoxysilylpropyl)-O-polyethylene oxide urethane; O-polyethylene oxide-N-(triethoxysilylpropyl)-urethane<br>Hydroxy functional trialkoxy silaneContains some bis(urethane) analogViscosity: 75-125 cStHydrophilic surface modifierForms PEGylated glass surfaces suitable for capillary electrophoresis<br></p>

<p>Alkyl Silane - Conventional Surface Bonding<br>Aliphatic, fluorinated aliphatic or substituted aromatic hydrocarbon substituents are the hydrophobic entities which enable silanes to induce surface hydrophobicity. The organic substitution of the silane must be non-polar. The hydrophobic effect of the organic substitution can be related to the free energy of transfer of hydrocarbon molecules from an aqueous phase to a homogeneous hydrocarbon phase. A successful hydrophobic coating must eliminate or mitigate hydrogen bonding and shield polar surfaces from interaction with water by creating a non-polar interphase. Although silane and silicone derived coatings are in general the most hydrophobic, they maintain a high degree of permeability to water vapor. This allows coatings to breathe and reduce deterioration at the coating interface associated with entrapped water. Since ions are not transported through non-polar silane and silicone coatings, they offer protection to composite structures ranging from pigmented coatings to rebar reinforced concrete. A selection guide for hydrophobic silanes can be found on pages 22-31 of the Hydrophobicity, Hydrophilicity and Silane Surface Modification brochure.<br>n-Decyldimethylchlorosilane; Chlorodimethylsilyldecane; Chlorodecyldimethylsilane<br></p>

<p>Alkenylsilane Cross-Coupling Agent<br>The cross-coupling reaction is a highly useful methodology for the formation of carbon-carbon bonds. It involves two reagents, with one typically being a suitable organometallic reagent - the nucleophile - and the other a suitable organic substrate, normally an unsaturated halide, tosylate or similar - the electrophile.<br>1,3,5-Trivinyl-1,3,5-trimethylcyclotrisiloxane; D’3; Trimethyltrivinylcyclotrisiloxane; Trivinyltrimethylcyclotrisiloxane; 2,4,6-Trimethyl-2,4,6-trivinylcyclotrisiloxane<br>Reagent formation of styrenes and dienes.Undergoes “living” anion ring-opening polymerizationReagent for vinylations via cross-coupling protocolsExtensive review of silicon based cross-coupling agents: Denmark, S. E. et al. "Organic Reactions, Volume 75" Denmark, S. E. ed., John Wiley and Sons, 233, 2011<br></p>

<p>3-Aminopropyldiisopropylethoxysilane, 3-(diisopropylethoxysilyl)propylamine<br>Monoamino functional monoalkoxy silaneForms hydrolytically stable amino-functional bonded phases and monolayersPrimary amine coupling agent for UV cure and epoxy systemsUsed in microparticle surface modification<br></p>

<p>Alkyl Silane - Conventional Surface Bonding<br>Aliphatic, fluorinated aliphatic or substituted aromatic hydrocarbon substituents are the hydrophobic entities which enable silanes to induce surface hydrophobicity. The organic substitution of the silane must be non-polar. The hydrophobic effect of the organic substitution can be related to the free energy of transfer of hydrocarbon molecules from an aqueous phase to a homogeneous hydrocarbon phase. A successful hydrophobic coating must eliminate or mitigate hydrogen bonding and shield polar surfaces from interaction with water by creating a non-polar interphase. Although silane and silicone derived coatings are in general the most hydrophobic, they maintain a high degree of permeability to water vapor. This allows coatings to breathe and reduce deterioration at the coating interface associated with entrapped water. Since ions are not transported through non-polar silane and silicone coatings, they offer protection to composite structures ranging from pigmented coatings to rebar reinforced concrete. A selection guide for hydrophobic silanes can be found on pages 22-31 of the Hydrophobicity, Hydrophilicity and Silane Surface Modification brochure.<br>Acetoxytrimethylsilane; O-Trimethylsilyl acetate<br>Vapor pressure, 30 °: 35 mm<br></p>

<p>Olefin Functional Trialkoxy Silane<br>Silane coupling agents have the ability to form a durable bond between organic and inorganic materials to generate desired heterogeneous environments or to incorporate the bulk properties of different phases into a uniform composite structure. The general formula has two classes of functionality. The hydrolyzable group forms stable condensation products with siliceous surfaces and other oxides such as those of aluminum, zirconium, tin, titanium, and nickel. The organofunctional group alters the wetting or adhesion characteristics of the substrate, utilizes the substrate to catalyze chemical transformations at the heterogeneous interface, orders the interfacial region, or modifies its partition characteristics, and significantly effects the covalent bond between organic and inorganic materials.<br>Alkenylsilane Cross-Coupling Agent<br>The cross-coupling reaction is a highly useful methodology for the formation of carbon-carbon bonds. It involves two reagents, with one typically being a suitable organometallic reagent - the nucleophile - and the other a suitable organic substrate, normally an unsaturated halide, tosylate or similar - the electrophile.<br>Vinyltrimethoxysilane; Ethenyltrimethoxysilane; Trimethoxyvinylsilane; Trimethoxysilylethylene, VTMS<br>Viscosity: 0.6 cStCopolymerization parameters- e,Q: -0.38, 0.031Specific wetting surface area: 528 m2/gVapor pressure, 20 °C: 9 mmEmployed in two-stage and one-stage graft polymerization/crosslinking for polyethylene (PE)Copolymerizes with ethylene to form moisture crosslinkable polymersConverts arylselenyl bromides to arylvinylselenidesReacts with anhydrides to transfer both vinyl and methoxy and thus form the mixed diesterCross-couples with α-bromo esters to give α-vinyl esters in high eeUsed in microparticle surface modificationFor vinylationsAlkenyltrialkoxysilanes react w/ aryl bromides and iodides to form styrenes under fluoride- and ligand-free and aqeous conditionsReacts in presence of fluorideExtensive review of silicon based cross-coupling agents: Denmark, S. E. et al. "Organic Reactions, Volume 75" Denmark, S. E. ed., John Wiley and Sons, 233, 2011<br></p>

<p>Bridging Silicon-Based Blocking Agent<br>Used as a protecting group for reactive hydrogens in alcohols, amines, thiols, and carboxylic acids. Organosilanes are hydrogen-like, can be introduced in high yield, and can be removed under selective conditions. They are stable over a wide range of reaction conditions and can be removed in the presence of other functional groups, including other protecting groups. The tolerance of silylated alcohols to chemical transformations summary is presented in Table 1 of the Silicon-Based Blocking Agents brochure.<br>Di-tert-butylsilylbis(trifluoromethanesulfonate); Di-t-butylsilylbis(triflate); DTBS<br>More reactive than SID3205.0Converts 1,3-diols to cyclic protected 1,3-diolsReacts with 1,3-diols in preference to 1,2-diolsSummary of selective deprotection conditions is provided in Table 7 through Table 20 of the Silicon-Based Blocking Agents brochure<br></p>

<p>Siloxane-Based Silane Reducing Agent<br>Organosilanes are hydrocarbon-like and possess the ability to serve as both ionic and free-radical reducing agents. These reagents and their reaction by-products are safer and more easily handled and disposed than many other reducing agents. The metallic nature of silicon and its low electronegativity relative to hydrogen lead to polarization of the Si-H bond yielding a hydridic hydrogen and a milder reducing agent compared to aluminum-, boron-, and other metal-based hydrides. A summary of some key silane reductions are presented in Table 1 of the Silicon-Based Reducing Agents brochure.<br>Tetrakis(dimethylsiloxy)silane; M'4Q; 3,3-Bis(dimethylsiloxy)-1,1,5,5-tetramethyltrisiloxane<br>Viscosity: 1.1 cStCrosslinker for vinyl functional siliconesHigh molecular weight silane reducing agentExtensive review of silicon based reducing agents: Larson, G.; Fry, J. L. "Ionic and Organometallic-Catalyzed Organosilane Reductions", Wipf, P., Ed.; Wiley, 2007<br></p>

<p>Alkyl Silane - Conventional Surface Bonding<br>Aliphatic, fluorinated aliphatic or substituted aromatic hydrocarbon substituents are the hydrophobic entities which enable silanes to induce surface hydrophobicity. The organic substitution of the silane must be non-polar. The hydrophobic effect of the organic substitution can be related to the free energy of transfer of hydrocarbon molecules from an aqueous phase to a homogeneous hydrocarbon phase. A successful hydrophobic coating must eliminate or mitigate hydrogen bonding and shield polar surfaces from interaction with water by creating a non-polar interphase. Although silane and silicone derived coatings are in general the most hydrophobic, they maintain a high degree of permeability to water vapor. This allows coatings to breathe and reduce deterioration at the coating interface associated with entrapped water. Since ions are not transported through non-polar silane and silicone coatings, they offer protection to composite structures ranging from pigmented coatings to rebar reinforced concrete. A selection guide for hydrophobic silanes can be found on pages 22-31 of the Hydrophobicity, Hydrophilicity and Silane Surface Modification brochure.<br>n-Butyltrichlorosilane; Trichlorosilylbutane<br>Vapor pressure, 31 °C: 10 mm<br></p>

<p>Specialty Silicon-Based Blocking Agent<br>Used as a protecting group for reactive hydrogens in alcohols, amines, thiols, and carboxylic acids. Organosilanes are hydrogen-like, can be introduced in high yield, and can be removed under selective conditions. They are stable over a wide range of reaction conditions and can be removed in the presence of other functional groups, including other protecting groups. The tolerance of silylated alcohols to chemical transformations summary is presented in Table 1 of the Silicon-Based Blocking Agents brochure.<br>Chloromethyldimethylchlorosilane; (Chlorodimethylsilyl)chloromethane; Chloro(chloromethyl)dimethylsilane; CMDMCS<br>Can form cyclic products with appropriate 1,2-difunctional substratesUsed in analytical applications for greater ECD detectabilitySummary of selective deprotection conditions is provided in Table 7 through Table 20 of the Silicon-Based Blocking Agents brochure<br></p>

<p>(3-Trimethoxysilylpropyl)diethylenetriamine; N-[N'-(2-aminoethyl)aminoethyl]-3-aminopropytrimethoxysilane<br>Triamino functional trialkoxy silaneHardener, coupling agent for epoxiesγc of treated surfaces: 37.5 mN/mPrimary amine and two internal secondary amine coupling agent<br></p>

<p>Anhydride Functional Trialkoxy Silane<br>Silane coupling agents have the ability to form a durable bond between organic and inorganic materials to generate desired heterogeneous environments or to incorporate the bulk properties of different phases into a uniform composite structure. The general formula has two classes of functionality. The hydrolyzable group forms stable condensation products with siliceous surfaces and other oxides such as those of aluminum, zirconium, tin, titanium, and nickel. The organofunctional group alters the wetting or adhesion characteristics of the substrate, utilizes the substrate to catalyze chemical transformations at the heterogeneous interface, orders the interfacial region, or modifies its partition characteristics, and significantly effects the covalent bond between organic and inorganic materials.<br>3-Triethoxysilylpropylsuccinic anhydride<br>Viscosity: 20 cStCoupling agent for dibasic surfacesAcetic acid-catalyzed hydrolysis yields succinct acid derivativesHardener, coupling agent for for epoxy resins<br></p>

<p>Olefin Functional Trialkoxy Silane<br>Silane coupling agents have the ability to form a durable bond between organic and inorganic materials to generate desired heterogeneous environments or to incorporate the bulk properties of different phases into a uniform composite structure. The general formula has two classes of functionality. The hydrolyzable group forms stable condensation products with siliceous surfaces and other oxides such as those of aluminum, zirconium, tin, titanium, and nickel. The organofunctional group alters the wetting or adhesion characteristics of the substrate, utilizes the substrate to catalyze chemical transformations at the heterogeneous interface, orders the interfacial region, or modifies its partition characteristics, and significantly effects the covalent bond between organic and inorganic materials.<br>Alkenylsilane Cross-Coupling Agent<br>The cross-coupling reaction is a highly useful methodology for the formation of carbon-carbon bonds. It involves two reagents, with one typically being a suitable organometallic reagent - the nucleophile - and the other a suitable organic substrate, normally an unsaturated halide, tosylate or similar - the electrophile.<br>Vinyltriethoxysilane; Triethoxyvinylsilane; TEVS; VTES; Ethenyltriethoxysilane; Triethoxysilylethylene; Triethoxy(vinyl)silane<br>ΔHvap: 6.8 kcal/molΔHform: -463.5 kcal/molDipole moment: 1.69 debyeSpecific wetting surface area: 412 m2/gCopolymerization parameters- e,Q: -0.42, 0.028γc of treated surfaces: 25 mN/mVapor pressure, 20 °C: 5 mmSpecific heat: 0.25 cal/g/°Relative hydrolysis rate versus SIV9220.0, vinyltrimethoxysilane; 0.05Forms copolymers with ethylene for moisture induced coupling of polyethyleneCouples fillers or fiberglass to resinsSee VEE-005 for polymeric versionReacts with enamines to give (E)-β:-silylenamines, which cross-couple with aryl iodides to give β-aryl enaminesEmployed as a coupling agent, adhesion promoter, and crosslinking agentUsed in microparticle surface modification for fillersCompatible with sulfur and peroxide cured rubber, polyester, polyolefin, styrene, and acrylic based materialsFor vinylationsAvailable as an oligomeric hydrolysate, SIV9112.2Extensive review of silicon based cross-coupling agents: Denmark, S. E. et al. "Organic Reactions, Volume 75" Denmark, S. E. ed., John Wiley and Sons, 233, 2011<br></p>

<p>N,N-Bis(2-hydroxyethyl)-3-aminopropyltriethoxysilane; N-triethoxysilylpropyl-N,N-bis(2-hydroxyethyl)amine; 2,2'-[[3- (triethoxysilyl)propyl]imino]bisethanol<br>Tertiary amino functional trialkoxy silaneTerminal dihydroxy-functionalityUrethane polymer coupling agentContains 2-3% hydroxyethylaminopropyltriethoxysilaneSpecific wetting surface: 252 m2/gEmployed in surface modification for preparation of oligonucleotide arrays 62% in ethanol<br></p>

<p>Halogen Functional Trialkoxy Silane<br>Silane coupling agents have the ability to form a durable bond between organic and inorganic materials to generate desired heterogeneous environments or to incorporate the bulk properties of different phases into a uniform composite structure. The general formula has two classes of functionality. The hydrolyzable group forms stable condensation products with siliceous surfaces and other oxides such as those of aluminum, zirconium, tin, titanium, and nickel. The organofunctional group alters the wetting or adhesion characteristics of the substrate, utilizes the substrate to catalyze chemical transformations at the heterogeneous interface, orders the interfacial region, or modifies its partition characteristics, and significantly effects the covalent bond between organic and inorganic materials.<br>Chloromethyltriethoxysilane; triethoxy(chloromethyl)silane; (chloromethyl)triethoxysilane; (triethoxysilyl)methylchloride<br>Grignard reacts with chlorosilanes or intermolecularly to form carbosilanesUsed in microparticle surface modification<br></p>

<p>Siloxane-Based Silane Reducing Agent<br>Organosilanes are hydrocarbon-like and possess the ability to serve as both ionic and free-radical reducing agents. These reagents and their reaction by-products are safer and more easily handled and disposed than many other reducing agents. The metallic nature of silicon and its low electronegativity relative to hydrogen lead to polarization of the Si-H bond yielding a hydridic hydrogen and a milder reducing agent compared to aluminum-, boron-, and other metal-based hydrides. A summary of some key silane reductions are presented in Table 1 of the Silicon-Based Reducing Agents brochure.<br>1,3,5,7-Tetramethylcyclotetrasiloxane; TMCTS; Methyl hydrogen cyclic tetramer<br>ΔHcomb: 5,308 kJ/molΔHvap: 177.9 kJ/molVapor pressure, 20 °C: 7.0 mmCritical temperature: 278 °CHigh molecular weight silane reducing agentIn presence of oxygen plasma generates SiO2 films for microelectronicsCyclic monomer- undergoes hydrosilylation reactionsForms hybrid inorganic-organic polymers with dienes suitable for circuit board resinsForms gate dielectrics by CVDExtensive review of silicon based reducing agents: Larson, G.; Fry, J. L. "Ionic and Organometallic-Catalyzed Organosilane Reductions", Wipf, P., Ed.; Wiley, 2007<br></p>

<p>N,N'-bis[(3-trimethoxysilyl)propyl]ethylenediamine; bis(trimethoxysilylpropyl)ethylenediamine; 1,2-bis[(3-trimethoxysilyl)propylamino]ethane<br>Diamine functional dipodal silaneContains N,N-isomerCoupling agent for polyamides with enhanced hydrolytic stabilityForms thin film environments for metal ions<br></p>

<p>Olefin Functional Trialkoxy Silane<br>Silane coupling agents have the ability to form a durable bond between organic and inorganic materials to generate desired heterogeneous environments or to incorporate the bulk properties of different phases into a uniform composite structure. The general formula has two classes of functionality. The hydrolyzable group forms stable condensation products with siliceous surfaces and other oxides such as those of aluminum, zirconium, tin, titanium, and nickel. The organofunctional group alters the wetting or adhesion characteristics of the substrate, utilizes the substrate to catalyze chemical transformations at the heterogeneous interface, orders the interfacial region, or modifies its partition characteristics, and significantly effects the covalent bond between organic and inorganic materials.<br>7-Octenyltrimethoxysilane; 8-(Trimethoxysilyl)octene<br>Contains 10-15% internal olefin isomersCoupling agent for "in situ" polymerization of acrylamide for capillary electrophoresisEmployed in stretched DNA fibers for fluorescent in situ hybridization (FISH)mappingSurface treatment for FISH and replication mapping on DNA fibersUsed in microparticle surface modification<br></p>

<p>Tri-substituted Silane Reducing Agent<br>Organosilanes are hydrocarbon-like and possess the ability to serve as both ionic and free-radical reducing agents. These reagents and their reaction by-products are safer and more easily handled and disposed than many other reducing agents. The metallic nature of silicon and its low electronegativity relative to hydrogen lead to polarization of the Si-H bond yielding a hydridic hydrogen and a milder reducing agent compared to aluminum-, boron-, and other metal-based hydrides. A summary of some key silane reductions are presented in Table 1 of the Silicon-Based Reducing Agents brochure.<br>Methyldiethoxysilane; Diethoxymethylsilane<br>ΔHcomb: 3,713 kJ/molWill form high-boiling polymeric by-products with aqueous work-upExtensive review of silicon based reducing agents: Larson, G.; Fry, J. L. "Ionic and Organometallic-Catalyzed Organosilane Reductions", Wipf, P., Ed.; Wiley, 2007<br></p>

<p>N-(6-Aminohexyl)aminopropyltrimethoxysilane, N-[6-trimethoxysilyl)propyl]hexamethylethylenediamine, N-[3-(trimethoxysilyl)propyl]-1,6-hexanediamine<br>Diamino functional trialkoxy silanePrimary amine and an internal secondary amine coupling agent for UV cure and epoxy systemsUsed in microparticle surface modificationEmployed in immobilization of DNAEmployed for immobilization of PCR primers on beadsLong chain analog of SIA0590.5<br></p>

<p>Tipped PEG Silane (326.46 g/mol)<br>PEO, Trimethoxysilane termination utilized for hydrophilic surface modificationPEGylation reagentHydrogen bonding hydrophilic silaneForms polymeric proton-conducting electrolytes<br></p>

<p>Trimethoxysilylpropyl modified (polyethylenimine)<br>Polyamino hydrophilic trialkoxysilaneViscosity: 125-175 cStEmployed as a coupling agent for polyamidesUsed in combination with glutaraldehyde immobilizes enzymes50% in isopropanol~20% of nitrogens substituted<br></p>

<p>Olefin Functional Dialkoxy Silane<br>Silane coupling agents have the ability to form a durable bond between organic and inorganic materials to generate desired heterogeneous environments or to incorporate the bulk properties of different phases into a uniform composite structure. The general formula has two classes of functionality. The hydrolyzable group forms stable condensation products with siliceous surfaces and other oxides such as those of aluminum, zirconium, tin, titanium, and nickel. The organofunctional group alters the wetting or adhesion characteristics of the substrate, utilizes the substrate to catalyze chemical transformations at the heterogeneous interface, orders the interfacial region, or modifies its partition characteristics, and significantly effects the covalent bond between organic and inorganic materials.<br>Vinylmethyldimethoxysilane; Dimethoxymethylvinylsilane; (Dimethoxymethyl)silylethylene; Ethenylmethyldimethoxysilane<br>Viscosity: 0.7 cStVapor pressure, 20 °C: 38 mmAdditive to moisture-cure silane modified polyurethanes as a water scavenger to prevent premature cureUsed in microparticle surface modification<br></p>

<p>Trimethylsilyl Blocking Agent<br>Used as a protecting group for reactive hydrogens in alcohols, amines, thiols, and carboxylic acids. Organosilanes are hydrogen-like, can be introduced in high yield, and can be removed under selective conditions. They are stable over a wide range of reaction conditions and can be removed in the presence of other functional groups, including other protecting groups. The tolerance of silylated alcohols to chemical transformations summary is presented in Table 1 of the Silicon-Based Blocking Agents brochure.<br>Trimethyliodosilane; Iodotrimethylsilane, Trimethylsilyl iodide; TMIS<br>Extremely reactive silylating agentUsed with HMDS for hindered alcoholsForms enol silyl ethers with ketones and SIT8620.0Nafion SAC-13 has been shown to be a recyclable catalyst for the trimethylsilylation of primary, secondary, and tertiary alcohols in excellent yields and short reaction timesSummary of selective deprotection conditions is provided in Table 7 through Table 20 of the Silicon-Based Blocking Agents brochure<br></p>

<p>N-Trimethoxysilylpropyl-N,N,N-trimethylammonium chloride; N,N,N-trimethyl-3-(trimethoxysilyl)-1-propanammonium chloride; trimethyl-3-(trimethoxysilyl)propylammonium chloride<br>Quaternary amino functional trialkoxy silanePrevents contact electrificationUsed to treat glass substrates employed in electroblottingAnti-static agentEmployed for bonded chromatographic phases50% in methanol<br></p>

<p>(Tridecafluoro-1,1,2,2-tetrahydrooctyl)triethoxysilane; 1H,1H,2H,2H-Perfluorooctyltriethoxysilane; POTS<br></p>

<p>Alkyl Silane - Conventional Surface Bonding<br>Aliphatic, fluorinated aliphatic or substituted aromatic hydrocarbon substituents are the hydrophobic entities which enable silanes to induce surface hydrophobicity. The organic substitution of the silane must be non-polar. The hydrophobic effect of the organic substitution can be related to the free energy of transfer of hydrocarbon molecules from an aqueous phase to a homogeneous hydrocarbon phase. A successful hydrophobic coating must eliminate or mitigate hydrogen bonding and shield polar surfaces from interaction with water by creating a non-polar interphase. Although silane and silicone derived coatings are in general the most hydrophobic, they maintain a high degree of permeability to water vapor. This allows coatings to breathe and reduce deterioration at the coating interface associated with entrapped water. Since ions are not transported through non-polar silane and silicone coatings, they offer protection to composite structures ranging from pigmented coatings to rebar reinforced concrete. A selection guide for hydrophobic silanes can be found on pages 22-31 of the Hydrophobicity, Hydrophilicity and Silane Surface Modification brochure.<br>n-Octadecyldimethylmethoxysilane; Methoxydimethyloctadecylsilane; Dimethylmethoxysilyloctadecane<br>Contains 5-10% C18 isomersEmployed in SAM resistMonoalkoxy silane<br></p>

<p>Alkyl Silane - Conventional Surface Bonding<br>Aliphatic, fluorinated aliphatic or substituted aromatic hydrocarbon substituents are the hydrophobic entities which enable silanes to induce surface hydrophobicity. The organic substitution of the silane must be non-polar. The hydrophobic effect of the organic substitution can be related to the free energy of transfer of hydrocarbon molecules from an aqueous phase to a homogeneous hydrocarbon phase. A successful hydrophobic coating must eliminate or mitigate hydrogen bonding and shield polar surfaces from interaction with water by creating a non-polar interphase. Although silane and silicone derived coatings are in general the most hydrophobic, they maintain a high degree of permeability to water vapor. This allows coatings to breathe and reduce deterioration at the coating interface associated with entrapped water. Since ions are not transported through non-polar silane and silicone coatings, they offer protection to composite structures ranging from pigmented coatings to rebar reinforced concrete. A selection guide for hydrophobic silanes can be found on pages 22-31 of the Hydrophobicity, Hydrophilicity and Silane Surface Modification brochure.<br>n-Octyldiisopropyl(dimethylamino)silane; N,N-Dimethyl-1,1-bis(1-methylethyl)-1-octyl silanamine<br>Reagent for HPLC bonded phases without acidic byproducts<br></p>