CRCU

Chemical Research in Chinese Universities ›› 2011, Vol. 27 ›› Issue (3): 516-519.

• Articles • Previous Articles     Next Articles

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

FENG Yu-zhong, QI Sheng-li, LIU Jing-jing, WU Zhan-peng, YANG Xiao-ping, JIN Ri-guang and WU De-zhen*   

  1. State Key Laboratory of Chemical Resource Engineering, Beijing University of Chemical Technology, Beijing 100029, P. R. China
  • Received:2010-11-05 Revised:2010-12-27 Online:2011-05-25 Published:2011-04-29
  • Contact: WU De-zhen E-mail:wdz@mail.buct.edu.cn
  • Supported by:

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

PDF (PC)

Cited

1

Abstract: 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(δ<4) 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.

Key words: Ladder like, Polyphenylsilsesquioxane, Sol-gel preparation, X-Ray technique