Preparation and Characterization of Ordered Ladder Like Polyphenylsilsesquioxane via Two-step Sol-gel Method  

作　　者：FENG Yu-zhong QI Sheng-li LIU Jing-jing WU Zhan-peng YANG Xiao-ping JIN Ri-guang WU De-zhen 

机构地区：[1]State Key Laboratory of Chemical Resource Engineering, BeOYng Unlversity of Chemical Technology, Beijing 100029, P. R. China

出　　处：《Chemical Research in Chinese Universities》2011年第3期516-519,共4页高等学校化学研究（英文版）

基　　金：Supported by the National Natural Science Foundation of China(No.51073020);the Program for Changjiang Scholars and Innovative Research Team in University of China(No.IRT0706)

摘　　要：Soluble and ordered ladder like polyphenylsilsesquioxane was synthesized by a two-step sol-gel method including hydrolysis and polycondensation. The procedure was monitored by Fourier transform infrared spectroscopy and the presence of the ladder like structure was confirmed by X-ray techniques. 29Si NMR analysis shows a very narrow half peak width（δ4） at δ –78.866 of the main chain unit C6H5SiO3/2 of polyphenylsilsesquioxane, indicating that the polyphenylsilsesquioxane has ordered ladder like structures rather than the branched ones. The relationship between molecular weight and the time of polycondensation was also discussed.Soluble and ordered ladder like polyphenylsilsesquioxane was synthesized by a two-step sol-gel method including hydrolysis and polycondensation. The procedure was monitored by Fourier transform infrared spectroscopy and the presence of the ladder like structure was confirmed by X-ray techniques. 29Si NMR analysis shows a very narrow half peak width（δ4） at δ –78.866 of the main chain unit C6H5SiO3/2 of polyphenylsilsesquioxane, indicating that the polyphenylsilsesquioxane has ordered ladder like structures rather than the branched ones. The relationship between molecular weight and the time of polycondensation was also discussed.

关 键 词：Ladder like Polyphenylsilsesquioxane Sol-gel preparation X-Ray technique 

分 类 号：O648.16[理学—物理化学] TQ426.81[理学—化学]