1,2-聚丁二烯13C-NMR弛豫的立体化学依赖性

波谱学杂志 ›› 1986, Vol. 3 ›› Issue (2): 139-145.

1,2-聚丁二烯¹³C-NMR弛豫的立体化学依赖性

倪少儒¹, 张宏放¹, 余赋生¹, 沈联芳², 钱保功²

1 中国科学院长春应用化学研究所;
2 中国科学院武汉物理研究所

收稿日期:1985-11-02 出版日期:1986-06-05 发布日期:2018-01-23
基金资助:
中国科学院院内基金资助课题

STEREOCHEMICAL DEPENDENCE OF CARBON-13 NMR RELAXATION IN 1,2-POLYBUTADIENES IN SOLUTION

Ni Shaoru¹, Chang Hongfang¹, Yu Fusheng¹, Shen Lianfang², Qian Baogong²

1 Changchun Institute of Applied Chemistry, Academia Sinica;
2 Wuhan Institute of Physics, Academia Sinica

Received:1985-11-02 Online:1986-06-05 Published:2018-01-23

摘要/Abstract

摘要： 本工作用200MHz脉冲付利叶变换NMR波谱仪测定了一系列1,2-链节立体构型不同的1,2-聚丁二烯样品的¹³C自旋-晶格弛豫时间T₁和核Overhauser效应NOE值,并用Cole-Cole、Fuoss-KirK wood经验相关时间分布模型和构象跳跃、阻尼取向扩散分子模型对nT₁和NOE值进行了电子计算机拟合。利用所得数据讨论了1,2-聚了二烯¹³C-NMR弛豫的立体化学依赖性。

Abstract: The carbon-13 spin-lattice relaxation times and nuclear overhauser enhancement factors (NOE) fora series of 1, 2-polybutadienes with different configurations of 1,2-units in solution of CDCl₃ are determined on 200 MHz pulse FT-NMR Spectrometer. Different kinds of model in interpreting the carbon-13 NMR relaxation data including the Cole-Cole, Fuoss-kirkwood distribution mobel of correlation times, the configurational jump model proposed by valeur et. al. and damped orientational diffusion model of polymer local main-chain motion proposed by Skolnick and Yaris were computer simulated. The stereochcmical dependence of carbon-13 NMR relaxation in 1, 2-polybutadienes is investigated.

倪少儒, 张宏放, 余赋生, 沈联芳, 钱保功. 1,2-聚丁二烯¹³C-NMR弛豫的立体化学依赖性[J]. 波谱学杂志, 1986, 3(2): 139-145.

Ni Shaoru, Chang Hongfang, Yu Fusheng, Shen Lianfang, Qian Baogong. STEREOCHEMICAL DEPENDENCE OF CARBON-13 NMR RELAXATION IN 1,2-POLYBUTADIENES IN SOLUTION[J]. Chinese Journal of Magnetic Resonance, 1986, 3(2): 139-145.

1,2-聚丁二烯¹³C-NMR弛豫的立体化学依赖性

STEREOCHEMICAL DEPENDENCE OF CARBON-13 NMR RELAXATION IN 1,2-POLYBUTADIENES IN SOLUTION

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