Chin. J. Org. Chem. ›› 2012, Vol. 32 ›› Issue (01): 68-74.DOI: 10.6023/cjoc1104223 Previous Articles     Next Articles



肖昕a, 吴明强a, 薛赛凤a, 祝黔江a, 张建新b, 陶朱a   

  1. a 贵州省大环化学及超分子化学重点实验室 贵州大学 贵阳 550025;
    b 贵州省天然产物化学重点实验室 贵阳 550002
  • 收稿日期:2011-04-22 修回日期:2011-08-29 发布日期:2011-09-28
  • 通讯作者: 陶朱
  • 基金资助:

    国家自然科学基金(Nos. 20961002, 21101037)、贵州省科学技术基金(Nos. 黔科合J 字[2010]2005 号, [2010]2126 号)、贵阳市科技局大学生科技创业计划(No. 筑科合同(2011201)大-4-3 号)资助项目.

Supramolecular Self-assemblies of Cucurbit[7,8]uril with Certain 1,n-Alkylene-bismethylpyridinum Dibromide

Xiao Xina, Wu Mingqianga, Xue Saifenga, Zhu Qianjianga, Zhang Jianxinb, Tao Zhua   

  1. a Key Laboratory of Macrocyclic and Supramolecular Chemistry of Guizhou Province, Guizhou University, Guiyang 550025;
    b Key Laboratory of Chemistry for Natural Products of Guizhou Province, Guiyang 550002
  • Received:2011-04-22 Revised:2011-08-29 Published:2011-09-28
  • Supported by:

    Project supported by the National Natural Science Foundation of China (Nos. 20961002, 21101037), the Science and Technology Fund of Guizhou Province (Nos. 2010-2005, 2010-2126) and the Science and Technology Plan Projects of Guiyang City (No. 2011201-4-3).

Four 1,n-alkylene-di-2-methylpyridinium dibromide (n=6, 8, 10, 12) guests were synthesized and characterized, and the host-guest interactions between cucurbit[7 or 8]urils with these guests were also investigated by using 1H NMR technique, thermogravimetry analysis and UV-Vis measurement in details. The experimental results revealed that it was different in the interaction models of the formed host-guest inclusion complexes between the cucurbit[7]uril with the four guests and the cucurbit[8]uril with the four guests. The cucurbit[7]uril preferred to thread on the linear guests and formed pseudorotaxane- like or “dumbbell”-like inclusion complexes, while the cucurbit[8]uril preferred to included whole body of a guest in a fold manner due to having a larger cavity.

Key words: cucurbit[7,8]uril, 1,n-alkylene-bismethylpyridinium dibromide (n=6, 8, 10, 12), pseudorotaxane, supramolecular self-assembly