高等学校化学学报 ›› 2005, Vol. 26 ›› Issue (10): 1835-1839.

• 研究论文 • 上一篇    下一篇

瓜环与喹啉衍生物包结配合行为研究

牟兰, 薛赛凤, 祝黔江, 陶朱, 曾晞   

  1. 贵州大学应用化学研究所, 贵阳550025
  • 收稿日期:2004-10-08 出版日期:2005-10-10 发布日期:2005-10-10
  • 基金资助:

    国家自然科学基金(批准号:20261002);贵州省科技厅人才培养基金(批准号:20020204);贵州省省长基金;贵州省重点科研项目(批准号:20023004);科技部国际合作项目(批准号:200211003)资助.

Inclusion Complexing Behavior of Cucurbit[n] urils with Some Quinoline Derivatives

MOU Lan, XUE Sai-Feng, ZHU Qian-Jiang, TAO Zhu, ZENG Xi   

  1. Institute of Applied Chemistry,Guizhou University,Guiyang 550025,China
  • Received:2004-10-08 Online:2005-10-10 Published:2005-10-10

摘要: 利用1H NMR以及荧光技术研究了六、七、八元瓜环与2-苯基喹啉、N-正丙基溴化异喹啉、3-氨基喹啉及7,8-苯并喹啉的相互作用.两种方法的考察结果均表明,2-苯基喹啉能与这3种瓜环发生相互作用,其中六、七元瓜环与2-苯基喹啉形成1∶1的稳定包结配合物,包结常数分别为1.6×104和3.2×103L/mol.八元瓜环能与2-苯基喹啉形成1∶2包结物.1H NMR结果还表明,3种瓜环均能与N-正丙基溴化异喹啉相互作用,其化学计量比均为1∶2;七元瓜环与7,8-苯并喹啉相互作用,化学计量比约为1∶1.荧光法也表明八元瓜环能与N-正丙基溴化异喹啉、3-氨基喹啉及7,8-苯并喹啉发生相互作用,并且荧光强度随瓜环浓度增加而下降,其化学计量比为1∶2.同时,讨论了上述主客体包结配合物的作用模式.

关键词: 瓜环, 喹啉衍生物, 包结配合, 1HNMR技术, 荧光光谱分析

Abstract: The interaction of cucurbit[n=6,7,8]urils(Q[6],Q[7],Q[8]) with some quinoline derivatives,such as 2-phenylquinoline,N-propylquinoline,3-aminoquinoline and 7,8-phenylquinoline,were studied by using 1H NMR technique and fluorometric analysis.The experimental results of both methods reveal that 2-phenylquinoline can form stable inclusion complex with Q[6],Q[7],Q[8] with a ratio of 1∶1,1∶1 and 2∶1 respectively,and the inclusion constants of 2-phenylquinoline-Q[6] or Q[7] was 1.6×104 and 3.2×103 L/mol respectively.1H NMR results also show that Q[6],Q[7],Q[8] could form inclusion complex with N-propylquinoline with a ratio of 2∶1 repectively,and Q[7] could form inclusion complex with 7,8-phenylquinoline with a ratio of 1∶1.Fluorometric analysis reveal that the host-guest complexes of Q[8] and the title quinoline derivatives were formed with a ratio of 1∶2 repectively,and the fluorescence of the interacted quinoline derivatives was queched by Q[8].Also the interaction models were suggested for the above hous-guest inclusion complexes.

Key words: Cucurbit[n]uril, Quinoline derivative, Inclusion complexes, 1H NMR technique, Fluorometric analysis

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