Silica Hybrid Containing (R)-2,2′-Binaphtho-20-crown-6 Moieties via the Sol-Gel Process  

作　　者：成义祥 刘田东 陈令武 

机构地区：[1]School of Chemistry and Chemical Engineering, Nanjing University

出　　处：《Chinese Journal of Chemistry》2003年第8期1101-1104,共4页中国化学（英文版）

基　　金：theFoundationofChineseEducationMinistryforOverseaReturnee (No .0 2 0 5H0 89)

摘　　要：R ) 6,6′ Bis(triethoxysilylethen 2 yl) 2,2′ binaphtho 20 crown 6 (precursor, R 2) derived from ( R ) 2,2′ BINOL derivative was synthesized by Pd catalyzed Heck reaction of ( R ) 6,6′ dibromo 2,2′ binaphtho 20 crown 6 ( R 1) intermediate with vinyltriethoxysilane. The hydrolysis and polycondensation of the precursor gave rise to the corresponding xerogel. Both precursor and xerogel were analysed by NMR, FT IR, UV, CD spectra, fluorescent spectroscopy, polarimetry and elemental analysis. The precursor and xerogel can emit strong blue fluorescence and are expected to have the potential application in the separation of chiral molecules as fluorescent sensor. The precursor exhibits strong Cotton effect in its circular dichroism (CD) spectrum indicating that it is a highly rigid structure.R ) 6,6′ Bis(triethoxysilylethen 2 yl) 2,2′ binaphtho 20 crown 6 (precursor, R 2) derived from ( R ) 2,2′ BINOL derivative was synthesized by Pd catalyzed Heck reaction of ( R ) 6,6′ dibromo 2,2′ binaphtho 20 crown 6 ( R 1) intermediate with vinyltriethoxysilane. The hydrolysis and polycondensation of the precursor gave rise to the corresponding xerogel. Both precursor and xerogel were analysed by NMR, FT IR, UV, CD spectra, fluorescent spectroscopy, polarimetry and elemental analysis. The precursor and xerogel can emit strong blue fluorescence and are expected to have the potential application in the separation of chiral molecules as fluorescent sensor. The precursor exhibits strong Cotton effect in its circular dichroism (CD) spectrum indicating that it is a highly rigid structure.

关 键 词：R  )  2 2′  BINOL organic silicon sol  gel Heck reaction 

分 类 号：O627.4[理学—有机化学]