Photochromism of 36-Armed Liquid Crystalline Dendrimer  

作　　者：Jian Qiang LIU Qi Zhen ZHANG Jing Zhi ZHANG Wan Guo HOU 

机构地区：[1]School of Physics and Microelectronics, Shandong University, Ji＇nan 250100 [2]Key Laboratory of Education Ministry on Colloid ＆ Interface Chemistry, Ji＇nan 250100 [3]School of Chemistry and Chemical Engineering, Shandong University, Ji＇nan 250100

出　　处：《Chinese Chemical Letters》2005年第10期1371-1374,共4页中国化学快报（英文版）

基　　金：The authors thank the National Natural Science Foundation of China(No.29874020)for financial support.

摘　　要：The photochromism of a 36-armed liquid crystalline dendrimer D6 was briefly described in this paper. The molar absorption coefficient, photoisomerization and photo back-isomerization of D6 in solution were investigated by UV/Vis absorption spectra. The results indicate that the photochromism and photo back-isomerization of D6 in chloroform （CHC13） and tetrahydrofuran （THF） solutions are in accordance with the ftrst order kinetics. The photochromism rate constants of D6 are 101 sI, it is 107 times larger than that of side-chain liquid crystalline polymers containing the same azobenzene moieties.The photochromism of a 36-armed liquid crystalline dendrimer D6 was briefly described in this paper. The molar absorption coefficient, photoisomerization and photo back-isomerization of D6 in solution were investigated by UV/Vis absorption spectra. The results indicate that the photochromism and photo back-isomerization of D6 in chloroform （CHC13） and tetrahydrofuran （THF） solutions are in accordance with the ftrst order kinetics. The photochromism rate constants of D6 are 101 sI, it is 107 times larger than that of side-chain liquid crystalline polymers containing the same azobenzene moieties.

关 键 词：PHOTOCHROMISM liquid crystalline dendrimer photo back-isomerization. 

分 类 号：O657.3[理学—分析化学]