Silanes

trihydroxysilylethyl phenylsulphonic acid; benzenesulfonic acid, [2-(trihydroxysilyl)ethyl]- 4-[2-(trihydroxysilyl)ethyl]benzenesulfonic acid Sulfonate functional trialkoxyl silaneMixed isomersForms hybrid organic-inorganic ionic membranes25% in water

DMS-A12 - Aminoproplyterminated polydimethylsiloxane cSt 20-30

Trimethylsilyl Blocking Agent 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. Alkyl Silane - Conventional Surface Bonding 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. Bis(Trimethylsilyl)acetamide; N,O-Bis(trimethylsilyl)acetamide; Trimethylsilyl-N-Trimethylsilylacetamidate; BSA More reactive than SIH6110.0Releases neutral acetamide upon reactionBoth silyl groups usedUsed for silylation in analytical applicationsReactions catalyzed by acidForms enol silyl ethers in ionic liquidsNafion 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

Specialty Silicon-Based Blocking Agent 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. Tri-substituted Silane Reducing Agent 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. Diisopropylchlorosilane; Chlorodiisopropylsilane; Chlorobis(1-methylethyl)silane Silylates and reduces β-hydroxy ketones selectivelyReduces β-hydroxyketones stereoselectivelyUsed in a silylation-reduction-allylation sequence of β-hydroxy esters to homoallylic-substituted 1,3-diolsUsed in the silylation-hydrosilation-oxidation of allyl alcohols to 1,3-diolsReaction carried out in diastereoselective mannerPhotochemically removableReduces β-hydroxy ketones to anti-1,3 diolsUsed in the tethered reactions of unsaturated alcoholsUsed in the silicon-based cross-coupling of vinyl ethers with aryl iodidesExtensive review of silicon based reducing agents: Larson, G.; Fry, J. L. "Ionic and Organometallic-Catalyzed Organosilane Reductions", Wipf, P., Ed.; Wiley, 2007Summary of selective deprotection conditions is provided in Table 7 through Table 20 of the Silicon-Based Blocking Agents brochure

Aromatic Silane - Conventional Surface Bonding 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. Phenyltriacetoxysilane; Triacetoxyphenylsilane silanetriol, 1-Phenyl-,1,1,1-triacetate Cross-linker for moisture-cure clear glass sealantsDecomposes >250 °

Specialty Silicon-Based Blocking Agent 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. Alkyl Silane - Conventional Surface Bonding 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. Bis(trimethylsiloxy)dichlorosilane; 3,3-Dichlorohexamethyltrisiloxane Sterically-hindered for the protection of diolsSummary of selective deprotection conditions is provided in Table 7 through Table 20 of the Silicon-Based Blocking Agents brochure

(N,N-Diethyl-3-aminopropyl)trimethoxysilane; N-(3-trimethoxysilyl)propyl-N,N-diethylamine, N,N-diethyl-3-(trimethoxysilyl)propylamine Tertiary amino functional silanesProvides silica-supported catalyst for 1,4-addition reactionsUsed together w/ SIA0591.0 to anchor PdCl2 catalyst to silica for acceleration of the Tsuji-Trost reaction in the allylation of nucleophiles

Alkyl Silane - Conventional Surface Bonding 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. n-Octylmethyldimethoxysilane; Methyldmethoxysilyloctane; Dimethoxymethyloctylsilane Dialkoxy silane

2-(3,4-Epoxycyclohexyl)ethylmethyldiethoxysilane; (2-methyldiethoxysilylethyl)cyclohexyloxirane Epoxy functional dialkoxy silaneUV polymerizeable monomerUsed in microparticle surface modificationCoupling agent for UV cure and epoxy systems

Siloxane-Based Silane Reducing Agent 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. 1,3,5,7-Tetramethylcyclotetrasiloxane; TMCTS; Methyl hydrogen cyclic tetramer 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

Azide Functional Trialkoxy Silane 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. 3-Azidopropyltriethoxysilane; Trimethoxysilylpropylazide Used with click chemistry to introduce and immobilize discrete complexes onto the SBA-15 surfaceUsed in the preparation of poly-L-lysine bound to silica nanoparticlesCoupling agent for surface modificationAVOID CONTACT WITH METALS

Methacrylate Functional Monoalkoxy Silane 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. Methacryloxypropyldimethylmethoxysilane; Methoxy(dimethyl)silylpropyl methacrylate Component in positive tone 157 nm resist.Coupling agent for UV cure systemsUsed in microparticle surface modificationComonomer for free-radical polymerizaitonInhibited with MEHQ

Olefin Functional Alkoxy Silane 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. Carboxylate Functional Dipodal Silane 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. Dipodal 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. Bis(3-trimethoxysilylpropyl) fumarate; 2-Butenedioic acid (2E)-1,4-bis(3-trimethoxysilylpropyl)ester Adhesion promoter for Pt-cure silicone RTVs

Diamine Functional Polymeric Silane 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. N-(2-Aminoethyl)-3-aminopropyltrimethoxsilane-propyltrimethoxysilane,N-[3-(trimethoxysilyl)propyl]ethylenediamine-(trimethoxysilyl)propane, oligomeric co-hydrolysate Cohydrolysate of SIA0591.1 and SIP6918.0