化学学报 ›› 1997, Vol. 55 ›› Issue (9): 930-936. 上一篇    

研究论文

侧基含偶氮基的硅氧烷梳状聚合物的光致变色性

张静智;张其震   

  1. 山东大学化学系
  • 发布日期:1997-09-15

Photochromism of comb-like polysiloxane polymers containing azobenzene side groups

ZHANG JINGZHI;ZHANG QIZHEN   

  • Published:1997-09-15

本文研究了对十一烯酰胺基偶氮苯及其硅氧烷均聚、共聚的梳状聚合物在溶液或薄膜状态下的光致变色性和热回复性。它们的反、顺异构体组分比随光照时间趋于某稳定值, 该稳定的组分比与照射光波长有关。光异构反应是可逆的。比较了异构反应速率和异构转换率, 以聚硅氧烷共聚物PSII3A[侧基比(M1/M2)=1/9, M1是对十一烯酰基偶氮苯, M2是对十一烯酰氧对氧基苯酯]为最佳。升高温度能增进热回复异构。

关键词: 聚硅氧烷, 光致变色, 梳形高聚物

This paper describes the photochromism and thermal back-isomerization of 4-undecylen-[10]-amidoazobenzene and its homo-and copolysiloxanes in solution and solid film. The composition ratio of cis/tran isomers tends to be constant in with irradiation time. The photostationary state composition is only related to irradiation were length. The photoisomerization reaction is reversible. The copolysiloxane PSII3A [the raio of fed monomers (M1/M2)=1/9, M1 is 4-undecylen-[10]-amidoazobenzene, M2 is methyl 4-undecylenoyllbenzoate] is the best in regard to photoisomerization reaction rate and photoisomerization conversion percentage. The thermal back-isomerization can be enhanced when temperature is elevated.

Key words: POLYSILOXANE, PHOTOCHROMISM, COMB POLYMER

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