高等学校化学学报

高等学校化学学报 ›› 2006, Vol. 27 ›› Issue (4): 654.

• 研究论文 • 上一篇    下一篇

三种瓜环与4,4′-联吡啶及N,N′-二甲基4,4′-联吡啶盐酸盐相互作用的研究

牟兰 薛赛凤 杜莹 赵云洁 祝黔江 陶朱   

  1. 贵州大学应用化学研究所, 贵阳 550025
  • 收稿日期:2005-04-15 出版日期:2006-04-10 发布日期:2006-04-10
  • 通讯作者: 薛赛凤(1943年出生), 女, 教授, 从事分析化学及超分子化学研究. E-mail: gzutao@263.net
  • 基金资助:

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

Interaction Between Three Cucurbiturils and  Hydrochloride Salts of 4,4′-Dipyridyl and Its Derivates

 MU Lan, XUE Sai-Feng, DU Ying, ZHAO Yun-Ji, ZHU Qian-Jiang, TAO Zhu   

  1. Institute of Applied Chemistry, Guizhou University, Guiyang
  • Received:2005-04-15 Online:2006-04-10 Published:2006-04-10
  • Contact: XUE Sai-Feng,E-mail: gzutao@263.net

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摘要：

以七元瓜环(Q[7])和新型椭圆型改性瓜环——对称四甲基取代六元瓜环(TMeQ[6])为主体, 4,4′-联吡啶的盐酸盐(44)以及N,N′-二甲基4,4′-联吡啶的盐酸盐(dm44)为客体的主客体相互作用进行了考察. 实验结果表明, Q[7]与客体44及dm44作用体系中, 客体为了更有效地被主体Q[7]包结, 在Q[7]内腔中呈倾斜状分布的几率最高. 用核磁共振、 循环伏安以及紫外吸收光谱对实验结果进行了印证和补充, 验证了TMeQ[6]与客体44及dm44可发生较强的相互作用, 形成一维的自组装超分子结构. 核磁共振以及循环伏安方法的实验结果表明, 没有观察到Q[6]与客体44及dm44的明显作用, 而紫外吸收光谱方法证实, Q[6]与客体44确实存在一定的相互作用, 比较主客体的结构特征, 该作用体系也可能存在自组装的一维超分子结构等多种作用形式.

关键词: 六, 七元瓜环; 对称四甲基六元瓜环; 4,4′-联吡啶盐酸盐及其衍生物; 相互作用模式

Abstract:

In this paper, the host-guest relationship between a general cucurbit[n=7]uril(Q[7]) or a new ellipsoid-hostsymmetric tetramethyl-cucurbituril(TMeQ[6]) with hydrochloride salts of 4,4′-dipyridyl(44) or N,N′-dimethyl-4,4′-dipyridyl(dm44) was  examined for confirming the interaction between cucurbituril(Q[6]) and these guests.  The experimental results revealed that Q[7] included the 4,4′-dipyridyl part of this kind of guests which were inclined in the cavity of Q[7].  The results based on  1H NMR technique, cyclic voltammetric method and UV absorption spectrophotometric measurement revealed that strong interaction was existed between TMeQ[6] and  guest 44 or dm44 and a one-dimensional assembled superamolecular could be formed.  1H NMR technique and cyclic voltammetric method showed  no obvious interaction between Q[6] with the guest 44 and its derivates, however, UV absorption spectrophotometric measurements revealed that kind of interaction of them did occur, comparing the structural characteristic of Q[6] to TMeQ[6], a one-dimensional assembled superamolecular could be also formed between Q[6] and guest 44 and its derivates.

Key words: Cucurbit[n=6,7]uril;  Symmetric tetramethyl cucurbituril;  4,4′Dipyridyl hydrochloride salt and its derivates;  Interaction model

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