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(05): 618-622.
doi:
10.3866/PKU.WHXB19910521
Citation: Yan Xin, Wang De-Hua, Qian Bao- ng. Heteronuclear Cross-Relaxation and Two-Dimensional NOE Spectra of Polymers[J]. Acta Physico-Chimica Sinica, 1991, 7(05): 618-622. doi: 10.3866/PKU.WHXB19910521
Citation: Yan Xin, Wang De-Hua, Qian Bao- ng. Heteronuclear Cross-Relaxation and Two-Dimensional NOE Spectra of Polymers[J]. Acta Physico-Chimica Sinica, 1991, 7(05): 618-622. doi: 10.3866/PKU.WHXB19910521
聚合物异核交叉弛豫及二维NOE谱
English
Heteronuclear Cross-Relaxation and Two-Dimensional NOE Spectra of Polymers
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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