| 低聚噻吩衍生物的合成及液晶性能 |
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| 引用本文： | 刘平,胡建华,赵其中,周小平,童真,许运华,邓文基.低聚噻吩衍生物的合成及液晶性能[J].华南理工大学学报(自然科学版),2003,31(5):11-15. |
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| 作者姓名： | 刘平 胡建华 赵其中 周小平 童真 许运华 邓文基 |
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| 作者单位： | 1. 华南理工大学,材料科学研究所,广东,广州,510640
2. 华南理工大学,应用物理系,广东,广州,510640 |
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| 基金项目： | 教育部留学回国人员科研启动基金，科技部基础研究重大项目前期研究专项资助项目 (2 0 0 1 -CCA0 35 0 0 )，人事部留学人员科技活动项目择优资助 |
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| 摘 要： | 设计合成了一系列新型低聚噻吩衍生物N，N′-双烷烃基-5，5″-二溴基-2，2′:5′2″-三噻吩4，4″-二酰胺(DNCnDBr3T，n＝5，8，16，18)．示差扫描量热法测定及偏光光学显微镜观察的结果显示，DNCl8DBr3T、DNCl6DBr3T、DNC8DBr3T具有近晶A相液晶性质．研究结果表明，烷基链的长度以及分子间氢键对于液晶的形成起着重要作用．另外，还考察了DNCnDBr3T(n＝8，16，18)的光、电性能以及与有机溶剂的凝胶化性能．
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| 关 键 词： | 低聚噻吩衍生物 液晶 分子间氨键 液晶凝胶 |
| 文章编号： | 1000-565X(2003)05-0011-05 |
| 修稿时间： | 2002年12月13 |
Synthesis and Liquid Crystal Properties of Oligothiophene Derivatives |
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| Liu Ping,Hu Jian hua,Zhao Qi zhong,Zhou Xiao ping,Tong Zhen Xu Yun hua,Deng Wen ji.Synthesis and Liquid Crystal Properties of Oligothiophene Derivatives[J].Journal of South China University of Technology(Natural Science Edition),2003,31(5):11-15. |
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| Authors: | Liu Ping Hu Jian hua Zhao Qi zhong Zhou Xiao ping Tong Zhen Xu Yun hua Deng Wen ji |
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| Institution: | Liu Ping 1 Hu Jian hua 1 Zhao Qi zhong 1 Zhou Xiao ping 1 Tong Zhen 1 Xu Yun hua 2 Deng Wen ji 2 |
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| Abstract: | With the aim of developing new oligothiophene based liquid crystals involving hydrogen bonding, new terthio phene derivatives containing an alkylamide group,N,N' dialkyl 5,5" dibromo 2,2':5',2" terthiophene 4,4" dica rboxamide (DNC n DBr3T, n =5,8,16,18), were designed and synthesized, and their thermal behavior were examined. While DNC n DBr3T compounds with n =8, 16, 18 were found to form smectic A phase. It is shown that the alkyl chain length greatly affects liquid crystal phase formation. The absence of liquid crystallinity in the corresponding ester derivatives suggests that intermolecular hydrogen bonding also plays a role in the formation of liquid crystal phase in the DNC n DBr3T system. The electrical ,opticaal and gelation properties of DNC n DBr3T( n = 8,16,18) were reported. |
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| Keywords: | oligothiophene derivative liquid crystal intermolecular hydrogen bonding liquid crystal gel |
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