Study on the Synthesis, Structure and Liquid Crystalline of a New Photochromic Liquid Crystalline Dendrimer Containing Four 4-Butoxyazobenzene Mesogenic Groups in Its Periphery

Acta Chimica Sinica ›› 2004, Vol. 62 ›› Issue (3): 312-316. Previous Articles Next Articles

端基含4个丁氧基苯介晶基元光致变色液晶树状物的合成、结构及液晶性研究

张其震¹, 刘建强^1,2, 李爱香¹, 张静智¹

1. 山东大学化学与化工学院, 济南, 250100;
2. 山东大学物理与微电子学院, 济南, 250100

投稿日期:2003-11-05 修回日期:2004-01-04 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)和山东省自然科学基金资助项目.

Study on the Synthesis, Structure and Liquid Crystalline of a New Photochromic Liquid Crystalline Dendrimer Containing Four 4-Butoxyazobenzene Mesogenic Groups in Its Periphery

ZHANG Qi-Zhen¹, LIU Jian-Qiang^1,2, LI Ai-Xiang¹, ZHANG Jing-Zhi¹

1. School of Chemistry and Chemical Engineering, Shandong University, Jinan 250100;
2. School of Physics and Microelectronics, Shandong University, Jinan 250100

Received:2003-11-05 Revised:2004-01-04 Published:2014-01-26

Abstract

The synthesis of a new photochromic liquid crystalline (LC) dendrimer of the zero generation (D0) is described. Four 4-butoxyazobenzene groups were used as mesogenic fragments and attached in its periphery. Structure and properties of D0 were characterized by elemental analysis, ¹H NMR, MALDI-TOF-MS, IR, UV, polarizing optical micrograph, DSC and WAXD. Similar to M5, D0 is nematic liquid crystal. The mesomorphic state of dendrimer D0 depends on that of mesogenic units. Phase behavior of D0 in LC state is K138N147I145N118K. The isotropic enthalpy, isotropic entropy, melting enthalpy and melting entropy of the dendrimers of the zero, first, second and third generations were compared.

Key words: photochromic liquid crystalline dendrimer, nematic, phase transition enthalpy and entropy

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ZHANG Qi-Zhen, LIU Jian-Qiang, LI Ai-Xiang, ZHANG Jing-Zhi. Study on the Synthesis, Structure and Liquid Crystalline of a New Photochromic Liquid Crystalline Dendrimer Containing Four 4-Butoxyazobenzene Mesogenic Groups in Its Periphery[J]. Acta Chimica Sinica, 2004, 62(3): 312-316.

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端基含4个丁氧基苯介晶基元光致变色液晶树状物的合成、结构及液晶性研究

Study on the Synthesis, Structure and Liquid Crystalline of a New Photochromic Liquid Crystalline Dendrimer Containing Four 4-Butoxyazobenzene Mesogenic Groups in Its Periphery

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