Acta Phys. -Chim. Sin. ›› 2011, Vol. 27 ›› Issue (03): 664-670.doi: 10.3866/PKU.WHXB20110238

• SOFT MATTER • Previous Articles     Next Articles

Synthesis and Solution Properties of the Photo-Sensitive Telechelic Polymer——Coumarin-Containing Poly(4-vinylpyridine)

JIANG Jin-Qiang, QIANG Jing, NI Zhong-Bin, SONG Xiao-Qing, ZHANG Hong-Wu, LIU Xiao-Ya, CHEN Ming-Qing   

  1. School of Chemical and Material Engineering, Jiangnan University, Wuxi 214122, Jiangsu Province, P. R. China
  • Received:2010-09-06 Revised:2010-11-23 Published:2011-03-03
  • Contact: JIANG Jin-Qiang, LIU Xiao-Ya E-mail:jiangjq@jiangnan.edu.cn;lxy@jiangnan.edu.cn
  • Supported by:

    The project was supported by the National Natural Science Foundation of China (20704017, 50973044), Qing Lan Project of Jiangsu Province and the Fundamental Research Funds for the Central Universities, China (JUSRP31003).

Abstract:

A novel photo-sensitive telechelic polymer——coumarin-containing poly(4-vinylpyridine) (C- P4VP) was prepared using 4-vinylpyridine as a monomer, azodiiso-butyronile (AIBN) as an initiator, and coumarin-containing disulfides (C-S-S-C) as a chain transfer agent in the presence of tributylphosphine (Bu3P)/H2O. The polymer was characterized by Fourier transform infrared (FTIR) spectroscopy, 1H nuclear magnetic resonance (1H-NMR), and gel permeation chromatography (GPC). We found that the telechelic polymer can form polymer micelles in aqueous solutions at various pH values (pH=3-6). Additionally, when lowering the acidity of the aqueous solution, the polymer micelles gradually compacted and the degree of coumarin photo-dimerization decreased initially and then increased within a similar irradiation time.

Key words: Micelle, Poly(4-vinylpyridine), Tributylphosphine, Coumarin, Photo-dimerization

MSC2000: 

  • O648