物理化学学报 >> 2011, Vol. 27 >> Issue (11): 2691-2696.doi: 10.3866/PKU.WHXB20111019

光化学和辐射化学 上一篇    下一篇

β-环糊精和遥爪聚合物C-PDMAEMA的包结行为

江金强, 姜韬, 张成邦, 成浩, 刘晓亚, 张胜文, 陈明清   

  1. 江南大学化学与材料工程学院, 江苏无锡 214122
  • 收稿日期:2011-05-31 修回日期:2011-07-08 发布日期:2011-10-27
  • 通讯作者: 江金强, 刘晓亚 E-mail:jiangjq@jiangnan.edu.cn; lxy@jiangnan.edu.cn
  • 基金资助:

    国家自然科学基金(20704017, 50973044)、江苏省高校“青蓝工程”及中央高校基本科研业务费专项资金(JUSRP31003)资助项目

Inclusion Behavior of β-Cyclodextrin and Amphiphilic Telechelic Polymer C-PDMAEMA

JIANG Jin-Qiang, JIANG Tao, ZHANG Cheng-Bang, CHENG Hao, LIU Xiao-Ya, ZHANG Sheng-Wen, CHEN Ming-Qing   

  1. School of Chemical and Material Engineering, Jiangnan University, Wuxi 214122, Jiangsu Province, P. R. China
  • Received:2011-05-31 Revised:2011-07-08 Published:2011-10-27
  • Contact: JIANG Jin-Qiang, LIU Xiao-Ya E-mail:jiangjq@jiangnan.edu.cn; lxy@jiangnan.edu.cn
  • Supported by:

    The project was supported by the National Natural Science Foundation of China (20704017, 50973044), Qing Lan Project of Jiangsu Province, China, and Scientific and Fundamental Research Funds for the Central Universities, China (JUSRP31003).

摘要: 以香豆素二硫化物(C-S-S-C)/三丁基膦(Bu3P)复合体系为链转移剂, 甲基丙烯酸-N,N-二甲氨基乙酯(DMAEMA)为单体, 偶氮二异丁腈(AIBN)为引发剂制备了末端为香豆素光响应基元的双亲性遥爪聚合物(C-PDMAEMA). 用傅里叶变换红外(FTIR)光谱仪、凝胶渗透色谱(GPC)、核磁共振氢谱(1H-NMR)等对该聚合物进行了结构表征. 并用紫外-可见吸收光谱和荧光光谱及光二聚反应考察了β-环糊精与香豆素端基的包结络合行为. 研究表明: β-环糊精与香豆素端基是以1:1 形式进行包结, 其包结常数K=(1.270±0.062)×104 L·mol-1;光二聚反应实验表明该包结络合作用处于一快速平衡中, 其对香豆素端基光二聚反应的影响甚微.

关键词: 香豆素, 环糊精, 包结络合, 遥爪, 光二聚

Abstract: A novel photosensitive telechelic polymer C-PDMAEMA was prepared using 2-(dimethylamino) ethyl methacrylate (DAMEMA) as a monomer, azobisisobutyronitrile (AIBN) as inititon, coumarincontaining disulfides (C-S-S-C) as a chain transfer agent in the presence of tributyl phosphine (Bu3P) and water. Characterization was carried out using 1H-nuclear magnetic responance (1H-NMR), gel permeation chromatography (GPC) and Fourier transform infrared (FTIR) spectroscopy. It was found that the coumarin can form a host-guest inclusion complex with β-CD in aqueous solution. The UV-Vis and fluorescence spectra showed that only a 1:1 complex was formed with an inclusion complex K=(1.270±0.062)×104 L· mol-1. The irradiation experiment showed that this host-guest inclusion might have a very small effect on the photodimerization of coumarin end groups.

Key words: Coumarin, Cyclodextrin, Inclusion complex, Telechelic, Photo-dimerization

MSC2000: 

  • O644