物理化学学报 >> 1991, Vol. 7 >> Issue (05): 618-622.doi: 10.3866/PKU.WHXB19910521
晏欣; 王德华; 钱保功
Yan Xin; Wang De-Hua; Qian Bao-Gong
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.
13C spin lattice relaxation,
Two-dimensional heteronuclear NOE spectroscopy,
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.
Yan Xin; Wang De-Hua; Qian Bao-Gong. Heteronuclear Cross-Relaxation and Two-Dimensional NOE Spectra of Polymers[J]. Acta Phys. -Chim. Sin., 1991, 7(05): 618-622.
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