Functionalization of aerogels by the use of pre-constructed monomers: the case of trifluoroacetylated (3-aminopropyl) triethoxysilane

被引：16

作者：

Lermontov, Sergey A. ^{[1
]}

Sipyagina, Nataliya A. ^{[1
]}

Malkova, Alena N. ^{[1
]}

Yarkov, Alexander V. ^{[1
]}

Baranchikov, Alexander E. ^{[2
]}

Kozik, Vladimir V. ^{[3
]}

Ivanov, Vladimir K. ^{[2
,3
]}

机构：

[1] Russian Acad Sci, Inst Physiol Act Cpds, Chernogolovka 142432, Russia

[2] Russian Acad Sci, NS Kurnakov Gen & Inorgan Chem Inst, Moscow, Russia

[3] Natl Res Tomsk State Univ, Tomsk, Russia

来源：

RSC ADVANCES | 2014年 / 4卷 / 94期

基金：

俄罗斯科学基金会;

关键词：

SUPERHYDROPHOBIC SILICA AEROGELS; SURFACE MODIFICATION; AMINE; ABSORPTION; MONOLITHS; SOLVENTS;

D O I：

10.1039/c4ra06974a

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

A novel strategy for aerogels' functionalization, based on the preliminary modification of monomers before gelation, is proposed. The strategy is illustrated by the synthesis of trifluoroacetylated (3-aminopropyl) triethoxysilane (APTES)-based aerogels. An aerogel sample prepared by cogelation of APTES with tetraethoxysilane (TEOS), followed by trifluoroacetylation of free aminogroups, had a BET-surface area of 100-180 m(2) g(-1), while the samples prepared by cogelation of a preliminary trifluoroacetylated monomer with TEOS had a 2-5 times larger specific surface area. Trifluoroacetylated aerogels' properties showed strong dependence on the supercritical drying media.

引用

页码：52423 / 52429

页数：7

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