物理化学学报 >> 2017, Vol. 33 >> Issue (2): 407-412.doi: 10.3866/PKU.WHXB201611032

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基于铕取代多金属氧簇的手性发光液晶材料

袁鸿1,3,张静1,*(),魏学红3,*(),方慧敏3,袁世芳1,吴立新2,*()   

  1. 1 山西大学应用化学研究所,太原030006
    2 吉林大学,超分子结构与材料国家重点实验室,长春130012
    3 山西大学化学化工学院,太原030006
  • 收稿日期:2016-09-23 发布日期:2017-01-12
  • 通讯作者: 张静,魏学红,吴立新 E-mail:jingzhang@sxu.edu.cn;xhwei@sxu.edu.cn;wulx@jlu.edu.cn
  • 基金资助:
    国家重点基础研究发展规划项目(973)(2013CB834503);国家自然科学基金(21502107,21574057,21101101);山西省自然科学基金(2014021019-5);山西大学引进人才建设项目(020451801001);山西省高校科技创新项目(2016118);国家级大学生创新创业训练项目和山西大学大型科学仪器中心(201610108010)

Chiral Luminescent Liquid Crystal Material Based on Europium-Substituted Polyoxometalate

Hong YUAN1,3,Jing ZHANG1,*(),Xue-Hong WEI3,*(),Hui-Min FANG3,Shi-Fang YUAN1,Li-Xin WU2,*()   

  1. 1 Institute of Applied Chemistry, Shanxi University, Taiyuan 030006, P. R. China
    2 State Key Laboratory of Supramolecular Structure and Materials, Jilin University, Changchun 130012, P. R. China
    3 College of Chemistry and Chemical Engineering, Shanxi University, Taiyuan 030006, P. R. China
  • Received:2016-09-23 Published:2017-01-12
  • Contact: Jing ZHANG,Xue-Hong WEI,Li-Xin WU E-mail:jingzhang@sxu.edu.cn;xhwei@sxu.edu.cn;wulx@jlu.edu.cn
  • Supported by:
    the National Key Basic Research Program of China (973)(2013CB834503);National Natural Science Foundation of China(21502107,21574057,21101101);Natural Science Foundation of Shanxi Province, China(2014021019-5);Scientific Research Start-up Funds of Shanxi University, China(020451801001);Scientific and Technological Innovation Programs of Higher Education Institutions in Shanxi Province, China(2016118);National Training Programs of Innovation and Entrepreneurship for Undergraduates, China and Scientific Instrument Center of Shanxi University, China(201610108010)

摘要:

将铕取代的多金属氧簇引入手性液晶体系是构筑多功能手性发光软材料的有力工具。圆二色谱表明手性两亲分子可以通过静电相互作用诱导非手性多金属氧簇显示出超分子手性。差示扫描量热法、偏光显微镜和变温X射线衍射证实这种有机无机杂化的多金属氧簇复合物具有热致液晶性质。复合物的薄膜显示出本征发光,并且我们可以通过温度调控复合物的发光性质。用手性介晶阳离子静电包覆多金属氧簇是构筑多金属氧簇基手性发光液晶材料的有效方法。

关键词: 多金属氧簇, 光学活性, 液晶, 发光, 超分子自组装, 表面活性剂

Abstract:

The incorporation of europium-substituted polyoxometalate (PM) into chiral amphiphiles is attractive for the fabrication of multifunctional chiral luminescent liquid crystalline materials. Chiral amphiphiles acted as good promoters to trigger the achiral PM to show induced supramolecular chirality through electrostatic interactions, as illustrated by circular dichroism (CD) spectra. Differential scanning calorimetry (DSC), polarized optical microscopy (POM), and temperature-dependent X-ray diffraction (XRD) analysis confirmed that the organic/inorganic hybrid polyoxometalate complex exhibited thermotropic mesomorphic behaviors. In a cast film, the complex displayed intrinsic luminescence that could be adjusted by accurately controlling the temperature. The electrostatic encapsulation of PM with chiral mesomorphic promoters provides an effective method for constructing PM-based chiral luminescent liquid crystalline materials.

Key words: Polyoxometalate, Optical activity, Liquid crystal, Luminescence, Supramolecular selfassembly, Surfactant

MSC2000: 

  • O644