A Novel Sol–Gel Approach to Highly Condensed Silicas at Low Temperature

A Novel Sol–Gel Approach to Highly Condensed Silicas at Low Temperature

We have discovered new Meerwein’s reagent-catalyzed sol–gel polycondensations, which provide highly condensed silica Q4 and biphenylylene silica T3 as amorphous gels with marginal silanols starting from TEOS and 4,4′-bis(triethoxysilyl)biphenyl (BTEBph), respectively. We propose a plausible pathway...

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Veröffentlicht in:Chemistry letters 2012-03, Vol.41 (3), p.280-281
Hauptverfasser: Jorapur, Yogesh R, Mizoshita, Norihiro, Maegawa, Yoshifumi, Nakagawa, Hiroki, Hasegawa, Takeru, Tani, Takao, Inagaki, Shinji, Shimada, Toyoshi
Format: Artikel
Sprache:eng
Schlagworte:
Condensing
Pathways
Silicon dioxide
Sol gel process
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Zusammenfassung:We have discovered new Meerwein’s reagent-catalyzed sol–gel polycondensations, which provide highly condensed silica Q4 and biphenylylene silica T3 as amorphous gels with marginal silanols starting from TEOS and 4,4′-bis(triethoxysilyl)biphenyl (BTEBph), respectively. We propose a plausible pathway for this protocol with possible silyloxonium intermediates.
ISSN:0366-7022
1348-0715
DOI:10.1246/cl.2012.280