高等学校化学学报 ›› 2016, Vol. 37 ›› Issue (1): 48.doi: 10.7503/cjcu20150490

• 有机化学 • 上一篇    下一篇

刚棒中心含侧基的刚棒-线团分子的合成及聚集体结构分析

杨云天1, 于胜胜1, 李照华2, 陈铁1(), 金龙一1,2()   

  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, 化学系, 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:2015-06-24 出版日期:2016-01-10 发布日期:2015-11-17
  • 基金资助:
    国家自然科学基金(批准号: 21164013)、 吉林省新世纪优秀人才计划项目(批准号: 201410)和南开大学元素有机化学国家重点实验室开放基金(批准号: 201410)资助

Synthesis and Structural Analysis of Coil-Rod-Coil Molecules Containing Lateral Groups in the Middle of the Rod Segment

YANG Yuntian1, YU Shengsheng1, LI Zhaohua2, CHEN Tie1,*(), JIN Longyi1,2,*()   

  1. 1. Key Laboratory for Natural Resources of the Changbai Mountain and Functional Molecules, Ministry of Education, Department of Chemistry, Yanbian University, Yanji 133002, China
    2. State Key Laboratory of Elemento-organic Chemistry, Nankai University, Tianjin 300071, China
  • Received:2015-06-24 Online:2016-01-10 Published:2015-11-17
  • Contact: CHEN Tie,JIN Longyi E-mail:tchen@ybu.edu.cn;lyjin@ybu.edu.cn
  • Supported by:
    † Supported by the National Natural Science Foundation of China(No.21164013), the New Century Excellent Talents Plan of Jilin Province, China(No.201410) and the Foundation of State Key Laboratory of Elemento-organic Chemistry of Nankai University, China(No.201410)

摘要:

合成了一系列三嵌段刚棒-线团分子, 这些分子由含有苯、 联苯和具有侧基的苯单元与聚合度为7, 12及17的不同长度烷氧基链组成. 通过氢核磁共振仪(1H NMR)和质谱(MALDI-TOF MS)对其结构进行了表征, 利用差示扫描量热法(DSC)、 偏光显微镜(POM)和小角X射线散射实验(SAXS)对这些液晶化合物的自组装行为进行了研究. 实验结果表明, 侧基含酯基的分子1a~1c自组装成层状、 倾斜柱状和六方穿孔层状结构; 而侧基含羧基的分子2a~2c则自组装成倾斜柱状、 体心四方聚集体. 可见, 随着烷氧基链长度的改变, 刚棒中心的羧基和酯基能诱导分子的自组装行为发生变化.

关键词: 体心四方, 自组装, 倾斜柱状相, X射线散射

Abstract:

A series of triblock coil-rod-coil molecules, containing biphenyl, phenyl and phenyl groups with lateral units linked together with ether as a rod segment and poly(ethylene oxide)(PEO) which have a polymerization degree of 7, 12, 17, as the coil segment, was synthesized. Molecular structures of these compounds were characterized by means of 1H NMR and MALDI-TOF MS. The self-assembling behavior of the molecules was investigated by means of differential scanning calorimetry(DSC), small-angle X-ray scattering(SAXS) and optical polarized micrograph(POM) in the bulk state. The molecules 1a—1c spontaneously self-assembled into lamellar, hexagonal perforated lamellar, oblique columnar structure, while molecules 2a—2c self-assembled into oblique columnar and body-centered tetragonal structures in the crystalline phase, respectively. The results revealed that the lateral groups attached to the middle of rod segments dramatically influence the self-assembling behavior of these rod-coil molecular system.

Key words: Body-centered tetragonal, Self-assemble, Columnar phase, X-Ray scattering

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