化学学报 ›› 2004, Vol. 62 ›› Issue (2): 176-182. 上一篇    下一篇

研究论文

β-环糊精对氨基苯甲酸同分异构体的分子识别作用的研究

杨郁, 双少敏, 钞建宾, 张国梅, 丁海云, 董川   

  1. 山西大学化学化工学院, 现代化学研究所, 太原, 030006
  • 投稿日期:2003-05-29 修回日期:2003-08-25 发布日期:2014-01-26
  • 通讯作者: 双少敏,E-mail:smshuang@sxu.edu.cn E-mail:smshuang@sxu.edu.cn
  • 基金资助:
    国家自然科学基金(Nos.20172035,20275022)、教育部优秀青年教师资助计划及山西省自然科学基金资助项目.

Study on the Molecular Recognition Interaction of β-Cyclodextrin with Aminobenzoic Acid Isomer

YANG Yu, SHUANG Shao-Min, CHAO Jian-Bin, ZHANG Guo-Mei, DING Hai-Yun, DONG Chuan   

  1. College of Chemistry and Chemical Engineering, Institute of Advanced Chemistry, Shanxi University, Taiyuan 030006
  • Received:2003-05-29 Revised:2003-08-25 Published:2014-01-26

采用荧光光谱法系统研究了β-CD对o-, m, p-氨基苯甲酸同分异构体的分子识别作用,详细讨论了介质酸度对包合过程的影响,测定了它们之间形成包合物的包合常数,比较了β-CD对三者的包合能力,提出了相应的包合机理.用一维、二维核磁共振技术对包合部位进行了探讨,并结合分子力学计算以及计算机模拟技术提出了包合物的空间构型.分子力学计算得出的结果与NMR方法所得结果相吻合.

关键词: 氨基苯甲酸, 分子识别, 荧光光谱法, 核磁共振

The molecular recognition interaction of β-CD with ortho-, meta-, para- aminobenzoic acid isomers was systematically investigated by using steady-state fluorescence spectrum method. The effect of pH value of medium on the inclusion process was discussed in detail. The formation constants of inclusion complexes were determined and the inclusion ability of β-CD to aminobenzoic acid isomers was compared. The related mechanism was proposed. Meanwhile, the inclusion position was studied based on 1D, 2D NMR technique. The relative stereodiagrams of inclusion complexes were proposed by combining molecular dynamics calculation and computer simulation technique. The results obtained from molecular dynamics calculation were in accordance with the results of NMR.

Key words: aminobenzoic acid, molecular recognition, fluorescence spectrum method, NMR