Preparation of a microporous silicon oximide gel from the reaction of tris(dimethylamino)silylamine with formamide and its pyrolytic conversion into a silicon oxynitride based glass

Fei Cheng, Stephen M. Kelly, Frédéric Lefebvre, Adam F. Lee, Karen Wilson, Stephen Clark, John S. Bradley

Research output: Contribution to journalArticle

Abstract

A high-surface-area silicon oximide-based gel [SiOC(H)=NSi]m[Si2N-C(H)=O]n[SiN(H)-C(H)=O]p[SiOC(H)=NH]q[SiNH]r[SiNH2]s[SiNMe2]t was prepared via a formamide-based aminolysis of tris(dimethylamino)silylamine, (Me2N)3SiNH2. The structure of the gel and the mechanism of formation are elucidated. Pyrolysis of the gel at 1000 °C under N2 flow gave an amorphous microporous oxynitride-based glass with a BET surface area of 195 m2 g−1.
Original languageEnglish
Pages (from-to)3039-3044
Number of pages6
JournalJournal of Materials Chemistry
Volume15
Issue number29
Early online date15 Jun 2005
DOIs
Publication statusPublished - 7 Aug 2005

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