| 1,2-聚丁二烯13C-NMR弛豫的立体化学依赖性 |
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| 引用本文： | 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 |
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| 作者姓名： | 倪少儒 张宏放 余赋生 沈联芳 钱保功 |
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| 作者单位： | 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 |
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| 基金项目： | 中国科学院院内基金资助课题 |
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| 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。
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| 收稿时间： | 1985-11-02 |
STEREOCHEMICAL DEPENDENCE OF CARBON-13 NMR RELAXATION IN 1,2-POLYBUTADIENES IN SOLUTION |
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| 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 |
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| Authors: | Ni Shaoru Chang Hongfang Yu Fusheng Shen Lianfang Qian Baogong |
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| Affiliation: | 1.Changchun Institute of Applied Chemistry, Academia Sinica;2.Wuhan Institute of Physics, Academia Sinica |
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| 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. |
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