dc.contributor	Knight, Jeffrey
dc.contributor	Jayathilake, Himali
dc.contributor.advisor	Chen, Wei
dc.contributor.author	Zhu, Mojun
dc.date.accessioned	2011-05-12T18:34:20Z
dc.date.available	2011-05-12T18:34:20Z
dc.date.gradyear	2011	en_US
dc.date.issued	2011-05-12
dc.description.abstract	Aminosilanes are commonly used to functionalize silica substrates. The hydrolytic stability of aminosilane-derived layers is a major consideration in choosing suitable reagents for aqueous applications. We recently reported that aminosilane-derived layers prepared with the most widely used silane coupling agents, 3-aminopropylalkoxysilanes, suffer extensive loss upon exposure to water at moderate temperatures. This is likely caused by siloxane bond hydrolysis catalyzed by the amine functionality via the formation of a stable five-membered intermediate. In this study, we evaluated the performances of five silane coupling agents, 3-aminopropyltriethoxysilane (APTES), 3-aminopropyltrimethoxysilane (APTMS), N-(6-aminohexyl)aminomethyltriethoxysilane (AHAMTES), N-(2-aminoethyl)-3-aminopropyltriethoxysilane (AEAPTES), and N-(2-aminoethyl)-3-aminopropyltrimethoxysilane (AEAPTMS). They have the general structures of NH2(CH2)kSi(OR)3 and NH2(CH2)nNH(CH2)mSi(OR)3 , where R represents either a methyl or an ethyl group. Silanization was carried out on silicon wafers in anhydrous toluene or in the vapor phase. The hydrolytic stability of aminosilane-derived layers was correlated with the reaction conditions and the silane structural features.	en_US
dc.description.sponsorship	Chemistry	en_US
dc.identifier.uri	http://hdl.handle.net/10166/850
dc.language.iso	en_US	en_US
dc.rights	Attribution 3.0 Unported
dc.rights.restricted	public
dc.rights.uri	http://creativecommons.org/licenses/by/3.0/
dc.subject	aminosilane	en_US
dc.subject	silanization	en_US
dc.title	Investigation and Preparation of Hydrolytically Stable Aminosilane-derived Layers on Silica Surfaces	en_US
dc.type	Thesis	en_US
mhc.degree	Undergraduate	en_US
mhc.institution	Mount Holyoke College

Investigation and Preparation of Hydrolytically Stable Aminosilane-derived Layers on Silica Surfaces

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