高等学校化学学报

高等学校化学学报 ›› 2011, Vol. 32 ›› Issue (12): 2777.

• 研究论文 • 上一篇    下一篇

具有不同柱状结构的苯并菲盘状液晶化合物的合成及自组装

杨春长1,陈莉1,钟克利1,陈铁1,2,金龙一1   

  1. 1. 延边大学长白山生物资源与功能分子教育部重点实验室, 延吉 133002;
    2. 南开大学元素有机化学国家重点实验室, 天津 300071
  • 收稿日期:2011-01-21 修回日期:2011-04-08 出版日期:2011-12-10 发布日期:2011-11-25
  • 通讯作者: 金龙一 E-mail:lyjin@ybu.edu.cn
  • 基金资助:

    南开大学元素有机化学国家重点实验室开放课题(批准号:  201002)和吉林省自然科学基金(批准号: 201115225)资助.

Various Columnar Nano-structures from Self-Assembly of Triphenylene Discotic Liquid Crystalline Molecules

YANG Chun-Chang1, CHEN Li1, ZHONG Ke-Li1, CHEN Tie1,2, JIN Long-Yi1*   

  1. 1. Key Laboratory for Natural Resources of the Changbai Mountain and Functional Molecules, Ministry of Education, Yanbian University, Yanji 133002, China;
    2. State Key Laboratory of Elemento-Organic Chemistry, Nankai University, Tianjin 300071, China
  • Received:2011-01-21 Revised:2011-04-08 Online:2011-12-10 Published:2011-11-25
  • Contact: JIN Long-Yi E-mail:lyjin@ybu.edu.cn
  • Supported by:

    南开大学元素有机化学国家重点实验室开放课题(批准号:  201002)和吉林省自然科学基金(批准号: 201115225)资助.

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被引次数

5

摘要： 合成了3种含有不同长度烷基链的苯并菲盘状液晶化合物; 通过1H NMR 和 MALDI-TOF MS对其结构进行了表征;  利用差示扫描量热法(DSC)、热台偏光显微镜(POM)和小角X射线散射实验(SAXS)对3种液晶化合物的自组装行为进行了研究. 结果表明,  烷基链的长度对苯并菲盘状液晶化合物自组装结构的影响显著. 柔性链为辛基的苯并菲盘状液晶化合物自组装成六方柱状液晶相; 柔性链为十二烷基的化合物自组装成倾斜柱状液晶相; 而柔性链为十六烷基的化合物则未形成液晶相.

关键词: 苯并菲盘状液晶, 自组装, 柱状相, X射线散射

Abstract: Discotic liquid crystalline molecules, consisting of a flexible alkyl chain and a rigid block, have a strong ability to self-assemble into a variety of columnar nanostructures in the liquid crystalline phase.  In this paper, we report the synthesis and characterization of the self-assembly behavior of the three kinds of triphenylene discotic liquid crystalline molecules with various lengths of alkyl chains. Structural study of these moleculses by means of differential scanning calorimetry(DSC), polarizing optical microscopy(POM) and X-ray diffraction(XRD) revealed that the lengths of alkyl chains of triphenylene discotic liquid crystalline mo-lecules was strongly influenced the self assembly behavior in the liquid crystalline phase. The molecules containing octyl chains or dodecanyl chains self-assembled into 2D hexagonal columnar structure or 2D oblique columnar structure, respectively, in the liquid crystalline phase. While, the molecule containing hexadecyl chains did not construct ordered columnar nanostructure in the bulk state.

Key words:  Triphenylene discotic liquid crystalline, Self-assemble, Columnar phase, X-ray scattering

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