化学学报 ›› 2004, Vol. 62 ›› Issue (3): 317-323. 上一篇    下一篇

研究论文

二代光致变色液晶树枝状碳硅烷的光化学研究——端基含36个丁氧基偶氮苯介晶基元

张其震1, 刘建强1,2, 张静智1   

  1. 1. 山东大学化学化工学院, 济南, 250100;
    2. 山东大学物理与微电子学院, 济南, 250100
  • 投稿日期:2003-08-22 修回日期:2003-01-04 发布日期:2014-01-26
  • 通讯作者: 张其震,E-mail:qzzhang@sdu.edu.cn E-mail:qzzhang@sdu.edu.cn
  • 基金资助:
    国家自然科学基金(Nos.29874020,59573029),山东省自然科学基金(No.Y95B0720)和中国科学院高分子物理重点实验室(中国科学院长春应用化学研究所)资助项目.

Study on Photochemistry of Photochromic Liquid Crystalline Carbosilane Dendrimer of the Second Generation--Containing Thirty-six 4-Butoxyazobenzene Mesogenic Groups in Its Periphery

ZHANG Qi-Zhen1, LIU Jian-Qiang1,2, ZHANG Jing-Zhi1   

  1. 1. School of Chemistry and Chemical Engineering, Shandong University, Jinan 250100;
    2. School of Physics and Microelectronics, Shandong University, Jinan 250100
  • Received:2003-08-22 Revised:2003-01-04 Published:2014-01-26

研究了新的含36个丁氧基偶氮苯介晶基元的二代光致变色液晶树枝状碳硅烷(D2)在氯仿、四氢呋喃溶液中的光强,吸收光强,摩尔消光系数,最大吸收波长,量子产率,活化能,异构转换率,光回复异构化反应平衡常数,反-顺光异构化反应速率常数,光回复异构化正/逆和热回复异构化反应速率常数.

关键词: 光致变色液晶树状大分子, 光电信息功能材料, 反顺光异构化, 光回复异构, 热回复异构, 反/顺异构组分比, 活化能

The photochemical behavior of a new photochromic liquid crystalline (LC) carbosilane dendrimer of the second generation (D2) in CHCl3 and THF was described. Thirty-six 4-butoxyazobenzene mesogenic fragments were attached in its periphery. The intensity of light, intensity of absorption light, molar extinction coefficient, maximum absorption wave length, quantum yield, activation energy, reaction rate constant of trans/cis photochemical isomerization, photochemical back-isomerization, thermal back-isomerization and the equilibrium constant of photochemical back-isomerization reaction were discussed.

Key words: photochromic liquid crystalline dendrimer, photo-electro information functional material, trans/cis photoisomerization, photo chemical back-isomerization, trans/cis isomer ratio, thermal back-isomerization, activation energy