高等学校化学学报 ›› 2014, Vol. 35 ›› Issue (8): 1697.doi: 10.7503/cjcu20140035

• 有机化学 • 上一篇    下一篇

六元瓜环、对称四甲基六元瓜环与2,2'-(1,8-辛烷)-二异喹啉二溴化物的自组装模式

范志芳1,2, 薛赛凤2(), 陶朱2   

  1. 1. 六盘水师范学院化学与化学工程系, 六盘水 550003
    2. 贵州大学贵州省大环化学及超分子化学重点实验室, 贵阳 550025
  • 收稿日期:2014-01-13 出版日期:2014-08-10 发布日期:2014-03-31
  • 作者简介:联系人简介: 薛赛凤, 女, 教授, 博士生导师, 主要从事超分子化学研究. E-mail: sfxue@gzu.edu.cn
  • 基金资助:
    国家自然科学基金(批准号: 20972034)、 贵州省教育厅自然科学研究项目(批准号: 黔省专合字[2009]103号)和煤系固体废弃物资源化利用实验室项目[批准号: (2011)278]资助

Supramolecular Assemblies of Cucurbit[6]uril and Symmetrical Tetramethyl-substituted Cucurbit[6]uril with Bromide Salt of 2,2'-(Hexane-1,8-diyl)diisoquinolinium

FAN Zhifang1,2, XUE Saifeng2,*(), TAO Zhu2   

  1. 1. Department of Chemistry and Chemical Engineering, Liupanshui Normal College, Liupanshui 553004, China
    2. Key Laboratory of Macrocyclic and Supramolecular Chemistry of Guizhou Province, Guizhou University, Guiyang 550025, China
  • Received:2014-01-13 Online:2014-08-10 Published:2014-03-31
  • Contact: XUE Saifeng E-mail:sfxue@gzu.edu.cn
  • Supported by:
    Support by the National Natural Science Foundation of China(No.20972034), the Natural Science Research Project of the Education Department of Guizhou Province of China(No [2009]103) and the Solid Waste Recycling Laboratory of Coal Utilization China[No (2011)-278]

摘要:

利用核磁共振波谱、 紫外吸收光谱、 荧光光谱和单晶X射线衍射分析等考察了六元瓜环(Q[6])及对称四甲基六元瓜环(TMeQ[6])与2,2'-(1,8-辛烷)-二异喹啉二溴化物的相互作用. 实验结果表明, 客体分子分别与这2种瓜环自组装形成相似的1∶1包结配合物, 但晶体结构分析结果表明两个体系在主客体分子间作用力诱导下形成了不同的空间堆积模式, 其包结常数分别为KK8-Q[6]=4.18×107 L/mol, KK8-TMeQ[6]=6.11×107 L/mol.

关键词: 对称四甲基六元瓜环, 六元瓜环, 2, 2'-(辛烷)-二异喹啉二溴化物, 超分子自组装

Abstract:

Interactions between cucurbit[6]uril(Q[6]) or symmetrical tetramethyl-substituted cucurbit[6]uril(TMeQ[6]) and bromide salt 2,2'-(hexane-1,8-diyl)diisoquinolinium were studied experimentally by 1H NMR technology, electronic absorption spectroscopy, fluorescence spectroscopy and single crystal X-ray diffraction method. The experimental results revealed that the interaction of the guest molecule with both Q[6]s respectively could form the similarity inclusion complexes with host/guest ratio of 1∶1 in solution state, the binding constants(K) of the two complexes were in 107 scale. While the crystal structures from two systems showed different supramolecular assemblies due to the geometrical difference from two Q[6]s. The study showed that a 3D framework can be induced by the π-π stacking of the protruded isoquinolyl moieties. It may provide information in designment of molecular channel, machines and switches.

Key words: Symmetrical tetramethyl-substituted cucurbit[6]uril, Cucurbit[6]uril, Bromide salt of 2, 2'-(hexane-1, 8-diyl) diisoquinolinium, Supramolecular assembly

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