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

化学学报 ›› 2004, Vol. 62 ›› Issue (3): 312-316. 上一篇下一篇

研究论文

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

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摘要/Abstract

合成了周边含4个丁氧基偶氮苯介晶基元(M5)端基新的零代光致变色液晶树状物(D0),并用元素分析、核磁共振、基质辅助激光解吸飞行时间质谱、红外、紫外、偏光显微镜、差示扫描量热(DSC)和广角X射线衍射法(WAXD)表征.D0显示向列相,与M5相同,树状物相态由介晶基元相态所决定,D0的相行为:K138N147I145N118K.对零代(D0)、一代(D1)、二代(D2)和三代(D3)液晶树状物的清亮焓、清亮熵、熔化焓和熔化熵进行了比较.

关键词: 光致变色液晶树状物, 向列相, 相变焓, 相变熵

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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张其震, 刘建强, 李爱香, 张静智. 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[J]. 化学学报, 2004, 62(3): 312-316.

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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