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  

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

作　　者：张其震[1] 刘建强[1] 张静智[1] 

机构地区：[1]山东大学化学化工学院,济南250100

出　　处：《化学学报》2004年第3期317-323,共7页Acta Chimica Sinica

基　　金：国家自然科学基金 (Nos.2 98740 2 0 ;595730 2 9);山东省自然科学基金 (No.Y95B0 72 0 );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

摘　　要：研究了新的含 3 6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The photochemical behavior of a new photochromic liquid crystalline (LC) carbosilane dendrimer of the second generation (D2) in CHCl 3 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.

关 键 词：光致变色液晶树枝状大分子 碳硅烷 光化学 端基 丁氧基偶氮苯介晶基元 反顺光异构化 光回复异构 热回复异构 活化能 

分 类 号：O753.2[理学—晶体学]