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

Chem. J. Chinese Universities ›› 1995, Vol. 16 ›› Issue (5): 808.

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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. 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

Abstract

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

CLC Number:

O645

TrendMD:

ZHANG Jian-Guo, WU Yi-Jie, JING Feng-Ying, PEI Feng-Kui, TAN Hui-Min. Studies on Structure of EO/THF Random Copolyether(Ⅱ)──NMR Studies on Solution Action and Complex[J]. Chem. J. Chinese Universities, 1995, 16(5): 808.

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

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