高等学校化学学报 ›› 1995, Vol. 16 ›› Issue (5): 808.

• 论文 • 上一篇    下一篇

EO/THF无规共聚醚结构研究(Ⅱ)──NMR方法研究溶剂配合物与溶液行为

张建国1, 吴亦洁1, 景凤英1, 裴奉奎1, 谭惠民2   

  1. 1. 中国科学院长春应用化学研究所应用谱学开放实验室, 长春, 130022;
    2. 北京理工大学
  • 收稿日期:1994-05-09 修回日期:1994-08-25 出版日期:1995-05-24 发布日期:1995-05-24
  • 通讯作者: 张建国,男,42岁,助研.
  • 作者简介:张建国,男,42岁,助研.
  • 基金资助:

    国家科委八六三高技术项目

Studies on Structure of EO/THF Random Copolyether(Ⅱ)──NMR Studies on Solution Action and Complex

ZHANG Jian-Guo1, WU Yi-Jie1, JING Feng-Ying1, PEI Feng-Kui1, TAN Hui-Min2   

  1. 1. Changchun Institute of Applied Chemistry, Academia Sinica, Changchun, 130022;
    2. Beijing Institute of Technology
  • Received:1994-05-09 Revised:1994-08-25 Online:1995-05-24 Published:1995-05-24

摘要: 用1D-NMR和2D-NMR方法研究了EO/THF共聚醚(TEO)的溶液行为。TEO在浓溶液状态,其溶液浓度不仅使谱峰化学位移值增减,而且使峰型发生较大的变化。当改变温度时,13CNMR谱在高场区有如同溶剂化效应的过程,实验结果表明:浓度与温度使TEO溶液分子内部结构发生变化。2D-NOESY实验表明:在低浓度情况下,TEO分子易与活泼氢溶剂生成配合物,分子间偶极-偶极相互作用受温度和浓度的影响。

关键词: 动态NMR, 2D-NOESY, 高分子配合物, 溶剂化效应

Abstract: The special action of TEO solution was investigated by 1D,2D-NMR in CDCl3.For the present measurements, when the concentration of TEO was higher in CDCl3the chemical shift difference(△δ) and the peak number of 13CNMR spectrum were changed with increasing the solution concentration. At lower concentration (<3 % V/V), the peaks will be closed together for-CH2O-resonance carbon and it is not the appearance of the narrowed.When temperature was changed, the △δ value was contrary to the solvent effect. So, the shifts of the resonance carbon in the NMR spectra indicated clearly that the complex forma tion for the system of CDCl3, and TEO molecular interaction were affected by the experiment temperature and the solution concentration.

Key words: Dynamic NMR spectroscopy, 2D NOESY, Polymer complex, Solvent effect

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