Funktionalisierte siliciumverbindungen mit ω-tetramethyl- und ω-pentamethylcyclopentadienylalkyl-liganden: Molekulare bausteine zur darstellung von metall-haltigen polymeren
作者:P. Jutzi、T. Heidemann、B. Neumann、H.G. Stammler
DOI:10.1016/0022-328x(94)80190-8
日期:1994.6
Peralkylated cyclopentadiene systems of the type M5C5(CH2)3Si(Me)mY3-m, which possess cyclopentadiene units connected with a functionalized silane fragment by an alkylidene spacer group, are prepared via two routes. As an example of the first route, the disiloxane [Me5C5(CH2)3Si(Me)2]2O (2) has been synthesized from the corresponding iodo compound [I(CH2)3Si(Me)2]2O (1) by reaction with Me5C5K. The
通过两种途径制备具有环戊二烯单元的M 5 C 5(CH 2)3 Si(Me)m Y 3- m型的全烷基化环戊二烯系统,该环戊二烯单元通过亚烷基间隔基与官能化的硅烷片段连接。作为第一路线的实例,已经从相应的碘化合物[I(CH 2)3 Si(Me)合成了二硅氧烷[Me 5 C 5(CH 2)3 Si(Me)2 ] 2 O(2)。2 ] 2O(1)通过与Me 5 C 5 K反应。三氯硅烷Me 5 C 5(CH 2)3 SiCl 3(4),作为通过第二种方法制备的化合物的一个实例,在1-氢硅烷化后被分离出来。带有HSiCl 3的丙-2-烯基-1,2,3,4,5-五甲基环戊-2,4-二烯(3)。两种合成方法也都适用于制备Me 4 HC 5(CH 2)n Si(Me)m Y 3-型的部分烷基化的环戊二烯系统。米。因此,ω-碘烷基三乙氧基硅烷I(CH 2) n Si(OEt) 3( n = 1,2,3)与Me
Highly sensitive and selective detection of Cu(<scp>ii</scp>) by periodic mesoporous rhodamine derivative-based organosilicas with crystal-like pore walls
作者:Xiaoyong Qiu、Shuhua Han、Meng Gao
DOI:10.1039/c2ta00411a
日期:——
Schiff-base bridged periodic mesoporousorganosilicas (RSPMOs) were successfully synthesized by co-condensation of rhodamine Schiff-base derivative-bridged organosilanes and tetraethoxysilane (TEOS), using the ionic liquid 1-hexadecyl-3-methylimidazolium bromide (C16mimBr) as a structure-directing agent. The formation mechanism of ordered mesoporous hybrid materials with crystal-like pore walls was mediated
and outer shell-periodic mesoporousorganosilicas (PMOs) which incorporated the bis(rhodamine Schiff-base derivative) siloxane groups. Little fluorescenceemission of nanocomposites was observed due to the existence of spirolactam in the rhodamine derivative, however, upon the addition of Cu2+, the fluorescenceemission intensity increased dramatically, which resulted from ring-opening of the spirolactam