Silanes

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-Octyldimethylmethoxysilane; Methoxydimethyloctylsilane; Dimethylmethoxysilyloctane Monoalkoxy silane

Mono-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. Trihydridosilane Silyl Hydrides are a distinct class of silanes that behave and react very differently than conventional silane coupling agents. They react with the liberation of byproduct hydrogen. Silyl hydrides can react with hydroxylic surfaces under both non-catalyzed and catalyzed conditions by a dehydrogenative coupling mechanism. Trihydridosilanes react with a variety of pure metal surfaces including gold, titanium, zirconium and amorphous silicon, by a dissociative adsorption mechanism. The reactions generally take place at room temperature and can be conducted in the vapor phase or with the pure silane or solutions of the silane in aprotic solvents. Deposition should not be conducted in water, alcohol or protic solvents. Phenylsilane; Silylbenzene ΔHvap: 34.8 kJ/molEmployed in the reduction of esters to ethersReduces α,β-unsaturated ketones to saturated ketones in the presence of tri-n-butyltin hydrideReduces tin amides to tin hydridesUsed in the tin-catalyzed reduction of nitroalkanes to alkanesReduces α-halo ketones in presence of Mo(0)Adds to norbornene with high eeReducing reagent in radical reductionsYields ISiH3 on treatments with HI in presence of AlI3Extensive review of silicon based reducing agents: Larson, G.; Fry, J. L. "Ionic and Organometallic-Catalyzed Organosilane Reductions", Wipf, P., Ed.; Wiley, 2007

Olefin 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. 11-Allyloxyundecyltrimethoxysilane; (Trimethoxysilylundecyl)allyl ether ω-olefin for functional self-assembled monolayers (SAMs)Used in micro particle surface modificationComonomer for polyolefin polymerizationAdhesion promoter for silicone gels

Fluoroalkyl 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. Nonafluorohexyltrichlorosilane; 1-(Trichlorosilyl)nonafluorofluorohexane

Arylsilane Cross-Coupling Agent 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. 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. Phenyltriethoxysilane; Triethoxysilylbenzene; Triethoxy(phenyl)silane 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

n-Butylaminopropyltrimethoxysilane; N-[3-(trimethoxysilyl)propyl]butylamine; N-[3-(trimethoxysilyl)propyl]-n-butylamine Secondary amino functional trialkoxy silaneReacts with isocyanate resins to form urethane moisture cureable systemsUsed in microparticle surface modificationInternal secondary amine coupling agent for UV cure and epoxy systemsAdvanced cyclic analog available: SIB1932.4

Phenyl-Containing 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. 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. Phenyldimethylchlorosilane; Chlorodimethylphenylsilane; Dimethylphenylchlorosilane Viscosity: 1.4 cStΔHvap: 47.7 kJ/molVapor pressure, 25 °: 1 mmForms cuprateUsed in analytical proceduresSummary of selective deprotection conditions is provided in Table 7 through Table 20 of the Silicon-Based Blocking Agents brochure

Hydroxymethyltriethoxysilane; triethoxysilylmethanol Hydroxy functional trialkoxy silane50% in ethanolContains equilibrium condensation oligomersHydrolysis yields analogs of silica-hydroxymethylsilanetriol polymersCohydrolysates form highly water dispersible nanoparticlesFunctionalizes magnetic particles utilized in nucleic acid separationFunctionalizes nanoparticles for “stealth therapeutic” biomedical applications

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. Trialkylsilyl 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. Isopropyldimethylchlorosilane; 1-Dimethylchlorosilyl-1-methylethane Ethers comparable in stability to those of TES-protected ethersSummary of selective deprotection conditions is provided in Table 7 through Table 20 of the Silicon-Based Blocking Agents brochure

Aldehyde 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. Triethoxysilylundecanal Treated surface contact angle, water: 70°Long chain coupling agent for DNAProvides greater stability for coupled proteins than shorter alkyl homologsLong chain homolog of triethoxysilylbutyraldehyde (SIT8185.3)

Vinyl(chloromethyl)dimethoxysilane Halogen functional dialkoxy silaneMulti-functional coupling agent

3-Chloropropyldimethylmethoxysilane; 1-chloro-3-(dimethylmethoxysilyl)propane; (3-chloropropyl)methoxydimethylsilane Halogen functional monalkoxy silane

Olefin 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. Styrylethyltrimethoxysilane; m,p-Vinylphenethyltrimethoxysilane; m,p-triethoxysilylethylstyrene Copolymerization parameter, e,Q: -0.880, 1.500Comonomer for polyolefin polymerizationUsed in microparticle surface modificationInhibited with t-butyl catecholMixed m-, p-isomers and α-, β-isomersAdhesion promoter for Pt-cure siliconesContains ethylphenethyltrimethoxysilane

Bridging 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. Hexamethylcyclotrisilazane; Hexamethylcyclotrisilazane; 2,2,4,4,6,6-Hexamethylcyclotrisilazane Viscosity, 20 °C: 1.7 cStΔHform: 553 kJ/molDielectric constant: 1000Hz: 2.57Dipole moment: 0.92 debyePolymerizes to polydimethylsilazane oligomer in presence of Ru/H2Modifies positive resists for O2 plasma resistanceSilylates diols with loss of ammoniaSimilar in reactivity to HMDS, SIH6110.0Summary of selective deprotection conditions is provided in Table 7 through Table 20 of the Silicon-Based Blocking Agents brochure

N,N-Dimethyl-3-aminopropylmethyldimethoxysilane; Tertiary amino functional trialkoxy silaneUsed in microparticle surface modification

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. Methyltrichlorosilane; Trichloromethylsilane; Trichlorosilylmethane 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 couplingHigher purity grade available, SIM6520.1

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. Ethyltrimethoxysilane; Trimethoxysilylethane; Trimethoxyethylsilane Viscosity: 0.5 cStΔHcomb: 14,336 kJ/molDevelops clear resin coating systems more readily than methyltrimethoxysilaneTrialkoxy silane

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-Propylmethyldichlorosilane; Dichloromethyl-n-propylsilane Viscosity, 20 °C: 0.8 cSt

Dipodal PEG Silane (1,000-2,000 g/mol) UREASILPEO, Triethoxysilane termination utilized for hydrophilic surface modificationDual functional PEGylation reagentHydrogen bonding hydrophilic silaneAntifog coatings can be formed from combinations of polyalkylene oxide functional silanes and film-forming hydrophilic silanesIn combination with sulfolane forms gel electrolyte for solar cellsForms proton conducting hybrid organic-inorganic polymer electrode membranes

Fluorinated 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. (Heptadecafluoro-1,1,2,2-tetrahydrodecyl)trimethoxysilane; (1H,1H,2H,2H-Perfluorodecyl)trimethoxysilane; Heptadecafluorodecyltrimethoxysilane Packaged over copper powderTreated surface contact angle, water: 115 °Cγc of treated surfaces: 12 mN/mSurface modification of titanium and silica substrates reduces coefficient of frictionForms inorganic hybrids with photoinduceable refractive index reductionTrialkoxy silane

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. Trimethysilyl Cyanide; Trimethylsilylnitrile; Cyanotrimethylsilane; TMSCN Releases toxic HCN upon reactionExtremely reactive silylating agent for acids and alcoholsAmines and thiols react more slowly than acids and alcoholsDoes not react with amides, ureas or carbonatesSilylates amino acidsNafion 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

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. 1,3,5,7,9-Pentamethylcyclopentasiloxane; D'5; Methyl hydrogen cyclic pentamer; 2,4,6,8,10-Pentamethylcyclopentasiloxane ΔHvap: 47.3 kJ/molContains other cyclic homologsExtensive review of silicon based reducing agents: Larson, G.; Fry, J. L. "Ionic and Organometallic-Catalyzed Organosilane Reductions", Wipf, P., Ed.; Wiley, 2007

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-Octadecyldimethyl(dimethylamino)silane; (Dimethylamino)dimethyl(octadecyl)silane; N,N,1,1-Tetramethyl-1-octadecylsilanamine; N,N,1,1-Tetramethyl-1-octadecylsilanamine; (N,N-Dimethylamino)dimethyloctadecylsilane; (N,N-Dimethylamino)octadecyldimethylsilane Contains 5-10% C18 isomersEmployed in bonded HPLC reverse phases

Bis[3-(triethoxysilyl)propyl]disulfide; bis(triethoxysilyl)-4,5-dithiooctane Sulfur functional dipodal silaneContains sulfide and tetrasulfideDipodal coupling agent/vulcanizing agent for rubbersIntermediate for mesoporous silicas with acidic pores

N-(2-Aminoethyl)-3-aminoisobutyldimethylmethoxysilane, N-[3-(methoxydimethylsilyl)-2-methylpropyl]ethylenediamine Diamino functional monalkoxy silaneγc of treated surfaces: 37.5 mN/mPrimary amine and an internal secondary amine coupling agent for UV cure and epoxy systemsFor cyclic version: SIA0592.0

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-Octyldiisopropylchlorosilane; Diisopropyloctylchlorosilane; Chlorodiisopropylsilyloctane Reagent for preparation of HPLC stationary phases with high stability and efficiency