| 聚合物异核交叉弛豫及二维NOE谱 |
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| 引用本文： | 晏欣,王德华,钱保功.聚合物异核交叉弛豫及二维NOE谱[J].物理化学学报,1991,7(5):618-622. |
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| 作者姓名： | 晏欣 王德华 钱保功 |
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| 作者单位： | Laboratory of Magnetic Resonance and Atomic and Molecular Physics, Wuhan Institute of Physics, Academia Sinica, Wuhan 430071 |
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| 摘 要： |
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| 关 键 词： | 13C自旋-晶格弛豫 异核间的距离 二维异核NOE谱 聚(2 6-二甲基-1 4-苯醚) 聚异丁烯 |
| 收稿时间： | 1990-05-12 |
| 修稿时间： | 1990-11-13 |
Heteronuclear Cross-Relaxation and Two-Dimensional NOE Spectra of Polymers |
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| Yan Xin,Wang De-Hua,Qian Bao-Gong.Heteronuclear Cross-Relaxation and Two-Dimensional NOE Spectra of Polymers[J].Acta Physico-Chimica Sinica,1991,7(5):618-622. |
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| Authors: | Yan Xin Wang De-Hua Qian Bao-Gong |
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| Institution: | Laboratory of Magnetic Resonance and Atomic and Molecular Physics, Wuhan Institute of Physics, Academia Sinica, Wuhan 430071 |
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| Abstract: | The heteronuclear cross-relaxation rates in polymers were determined by selective and conventional ~(13)C spin-lattice relaxation experiments, the proton-carbon distances were calculated by the theoretical formula, and two-dimensional NOE spectra of the polymers were also measured. The results showed that (1) the measured proton-carbon distances coincide with the distances from molecular models, (2) there is the observable dipolar cross-relaxation effect between the quaternary carbons and their neighboring protons, and (3) the optimum mixing times depend on the relaxation properties of the proton and carbon. |
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| Keywords: | 13C spin lattice relaxation' ') 13C spin lattice relaxation" target="_blank">">13C spin lattice relaxation Proton-Carbon distance Two-dimensional heteronuclear NOE spectroscopy Poly(2 6-dimethyl-1 4-phenyleneoxide) Polyisobutylene |
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