高等学校化学学报 ›› 2017, Vol. 38 ›› Issue (1): 12-19.doi: 10.7503/cjcu20160647

• 研究论文: 无机化学 • 上一篇    下一篇

基于半刚性乳酸衍生物的单一手性配位聚合物的合成、 结构与性质

徐中轩(), 赵光练, 罗乐, 龙振敏   

  1. 遵义师范学院化学化工学院, 遵义 563002
  • 收稿日期:2016-09-19 出版日期:2017-01-10 发布日期:2016-12-20
  • 作者简介:联系人简介: 徐中轩, 男, 博士, 副教授, 主要从事配位聚合物研究. E-mail: xuzhongxuan4201@163.com
  • 基金资助:
    贵州省自然科学基金(批准号: LKZS201228)、 贵州省教育厅“125”重大专项基金(批准号: 2012015)和遵义师范学院博士基金(批准号: 2012BSJJ12)资助.

Synthesis, Structures and Properties of Homochiral Coordination Polymers Assembled from Semirigid Lactic Acid Derivatives

XU Zhongxuan*(), ZHAO Guanglian, LUO Le, LONG Zhenmin   

  1. School of Chemistry and Chemical Engineering, Zunyi Normal College, Zunyi 563002, China
  • Received:2016-09-19 Online:2017-01-10 Published:2016-12-20
  • Contact: XU Zhongxuan E-mail:xuzhongxuan4201@163.com
  • Supported by:
    † Supported by the Natural Science Foundation of Guizhou Province, China(No.LKZS201228), the “125” Program of Guizhou Education Department, China(No.2012015) and the Doctoral Scientific Fund of Zunyi Normal College, China(No.2012BSJJ12).

摘要:

在溶剂热反应条件下, 用预先合成的乳酸衍生物(R)-H2CBA和(S)-H2CBA分别与含氮辅助配体(E)-1,2-二(4-吡啶基)乙烯(DPEE)和1,4-二(1H-咪唑-1-基)苯(1,4-DIB)组合, 制备出2对不同结构的单一手性配位聚合物[Cd2((R)-CBA)2(DPEE)(H2O)2]n(1-D), [Cd2((S)- CBA)2(DPEE)(H2O)2]n(1-L), [Cd((R)-CBA)(1,4-DIB)]·H2O(2-D)和[Cd((S)-CBA)(1,4-DIB)]·H2O(2-L). 其中1-D和1-L是由梯形Cd-CBA链和DPEE配体连接成的二维框架结构; 而2-D和2-L是三维超分子框架结构, 包含3种不同类型的对映手性螺旋链. 对上述化合物进行了粉末X射线衍射、 热重分析和圆二色谱分析, 并对其荧光性质进行了讨论.

关键词: 乳酸衍生物, 单一手性, 配位聚合物, 螺旋链

Abstract:

Under the solvothermal reaction condition, two pairs of homochiral coordination polymers, namely [Cd2((R)-CBA)2(DPEE)(H2O)2]n(1-D), [Cd2((S)-CBA)2(DPEE)(H2O)2]n(1-L), [Cd((R)-CBA)(1,4-DIB)]·H2O(2-D) and [Cd((S)-CBA)(1,4-DIB)]. H2O(2-L)[DPEE=(E)-1,2-di(pyridin-4-yl)ethene; 1,4-DIB=1,4-di(1H-imidazol-1-yl)benzene; (R)-H2CBA=(R)-4-(1-carboxyethoxy)benzoic acid; (S)-H2CBA=(S)-4-(1-carboxyethoxy)benzoic acid], have been prepared from synthetic lactic acid derivative ligands[(R)-H2CBA and(S)-H2CBA], auxiliary ligands and Cd2+ ions. Among these complexes, 1-D and 1-L have ladder-like Cd-CBA2- chains, which are further linked by DPEE ligands to form a 2D framework. Complexes 2-D and 2-L feature three-dimensional supramolecular structure with hydrogen bonds, containing three kinds of homochiral helical chains. Moreover, the thermal stabilities, solid-state circular dichroism(CD) and photoluminescent properties of the complexes were also investigated.

Key words: Semirigid lactic acid derivative, Homochiral, Coordination polymer, Helical chain

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