A series of molecular building blocks containing allylsilyl groups, which can be incorporated into the appropriate sol-gel precursors as fragments, were prepared. The allylsilyl group is retained unchanged over the course of all reactions giving sol-gel precursors and behave as the synthetic equivalent of alkoxysilyl groups toward sol-gel polymerization, but are stable enough to allow purification by silica gel chromatography. These allylsilanes were successfully used as building blocks to construct functional sol-gel precursors via palladium-catalyzed coupling reactions. (C) 2007 Elsevier Ltd. All rights reserved.
Synthesis of a spirobifluorene-bridged allylsilane precursor for periodic mesoporous organosilica
作者:Natsuko Tanaka、Norihiro Mizoshita、Yoshifumi Maegawa、Takao Tani、Shinji Inagaki、Yogesh R. Jorapur、Toyoshi Shimada
DOI:10.1039/c0cc05823h
日期:——
A novel spirobifluorene-bridged allylsilane precursor, which can be easily purified by silica gel chromatography, was prepared by using a new molecular building block for allylsilane sol–gel precursors (MBAS) and successfully converted into a highly fluorescent periodic mesoporous organosilica film.