高等学校化学学报

高等学校化学学报

• 研究论文 • 上一篇    下一篇

七元瓜环与N,N’-二烷基-1,3-(4,4’-二吡啶基)丙烷衍生物的相互作用

姜平月1, 薛赛凤1,2, 吴明强1, 肖昕1, 祝黔江1,2, 陶朱1,2   

    1. 贵州省大环化学及超分子化学重点实验室,
    2. 贵州大学应用化学研究所, 贵阳 550025
  • 收稿日期:2008-01-15 修回日期:1900-01-01 出版日期:2008-08-10 发布日期:2008-08-10
  • 通讯作者: 薛赛凤

Interaction of Cucurbituril with N,N’-Bisalkyl-1,3-(4,4’-bispyridyl)propanes

JIANG Ping-Yue1, XUE Sai-Feng1,2*, WU Ming-Qiang1, XIAO Xin1, ZHU Qian-Jiang1,2, TAO Zhu1,2   

    1. Key Laboratory of Macrocyclic and Supramolecular Chemistry of Guizhou Province,
    2. Institute of Applied Chemistry, Guizhou University, Guiyang 550025, China
  • Received:2008-01-15 Revised:1900-01-01 Online:2008-08-10 Published:2008-08-10
  • Contact: XUE Sai-Feng

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摘要： 以1,3-(4,4’-二吡啶基)丙烷为母体, 合成了N,N’-二乙基、二丁基、二己基以及二辛基1,3-(4,4’-二吡啶基)丙烷衍生物. 利用1H NMR技术和紫外吸收光谱法, 考察了Q[7]与上述链状吡啶衍生物的相互作用. 实验结果表明, Q[7]与客体PC0, PC2作用, 瓜环包结客体的二吡啶基丙烷部分形成1∶1的包结配合物; 对于取代烷基碳链数大于4的N,N’-二烷基-1,3-(4,4’-二吡啶基)丙烷衍生物, 随着主体与客体摩尔比值的增加, 体系中主-客体相互作用的主导模式是Q[7]逐渐包结了客体二吡啶基丙烷部分, 进而形成Q[7]包结客体两端取代烷基, 甚至形成一个客体分子上“挂满”3个主体瓜环的包结物.

关键词: 七元瓜环, 1,3-(4,4’-二吡啶基)丙烷衍生物, 作用模式, 1H NMR技术, 紫外吸收光谱法

Abstract: A series of N,N’-bisalkyl-1,3-(4,4’-bispyridyl)propane guests were synthesized from 1,3-(4,4’-bispyridyl)propane. The interaction and the models of self-assembly psedorotaxanes of cucurbit[7] uril with these synthetic guests were investigated via 1H NMR technique and electronic absorption spectroscopy method. The experimental results reveal that the pseudorotaxane structure in which the host Q[7] included the 1,3-(4,4’-bispyridyl)propane core was the dominant model for the Q[7]-PC0 and Q[7]-PC2 interaction systems. For the guests having identical aliphatic substituents with chains longer than four carbon atoms, the dominant interaction models could start from Q[7] including the 1,3-(4,4’-bispyridyl)propane core, to including the substituted chains of the guest, and then a guest bearing three host Q[7] with the increase of the ratio of NQ[7]/Nguest.

Key words: Cucurbit[7] uril, 1,3-(4,4’-Bispyridyl)propane and its derivative, Interaction model, 1H NMR technique, UV absorption spectroscopy

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