高等学校化学学报 ›› 2013, Vol. 34 ›› Issue (4): 853.doi: 10.7503/cjcu20120897

• 有机化学 • 上一篇    下一篇

磺化杯[4]芳烃与双正电荷季铵盐的键合作用

李振泉1, 胡春秀2, 程玉桥1, 徐辉1, 曹绪龙1, 宋新旺1, 张衡益2, 刘育2   

  1. 1. 中国石化胜利油田分公司地质科学研究院, 东营 257015;
    2. 南开大学化学系, 元素有机化学国家重点实验室, 天津 300071
  • 收稿日期:2012-09-28 出版日期:2013-04-10 发布日期:2013-03-15
  • 通讯作者: 刘育,男,博士,教授,博士生导师,主要从事超分子化学研究.E-mail:yuliu@nankai.edu.cn E-mail:yuliu@nankai.edu.cn
  • 基金资助:

    国家自然科学基金(批准号:20932004,20972077)和中国石化前瞻性基础性研究课题(批准号:P07009)资助.

Binding Thermodynamics of p-Sulfonatocalix[4]arene with Quaternary Ammonium Dications

LI Zhen-Quan1, HU Chun-Xiu2, CHENG Yu-Qiao1, XU Hui1, CAO Xu-Long1, SONG Xin-Wang1, ZHANG Heng-Yi2, LIU Yu2   

  1. 1. Geological Scientific Research Institute of Shengli Oilfield Company, SINOPEC, Dongying 257015, China;
    2. State Key Laboratory of Elemento-Organic Chemistry, Department of Chemistry, Nankai University, Tianjin 300071, China
  • Received:2012-09-28 Online:2013-04-10 Published:2013-03-15

摘要:

采用核磁波谱和等温微量热滴定等手段研究了磺化杯[4]芳烃与3个双正电荷季铵盐相互作用的键合比、 键合模式以及热力学参数. 结果表明, 磺化杯[4]芳烃与3个双正电荷季铵盐以不同的键合模式形成1: 1络合物, 其键合常数均超过105 L/mol, 键合作用主要由焓变驱动, 同时伴随着微弱的正负熵变.

关键词: 双正电荷季铵盐, 磺化杯[4]芳烃, 热力学

Abstract:

The stoichiometric ratio, binding modes, complex stability constants and thermodynamic parameters of p-sulfonatocalix[4]arene with three quaternary ammonium dication salts were studied in aqueous buffer solution(pH=7.20) by means of 1H NMR spectroscopy and microcalorimetrical titration. The results obtained from NMR experiments suggest the 1: 1 stoichiometric ratio with different binding modes between host and guest. The results of the microcalorimetrical titration show that the complex stability constants of p-sulfonatocalix[4]arene with three quaternary ammonium dication salts are more than 105 L/mol. Thermodynamically, the host-guest binding behavior are mainly driven by the favorable enthalpic changes, accompanied by the unfavorable entropic changes.

Key words: Quaternary ammonium dication, p-Sulfonatocalix[4]arene, Thermodynamics

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