EFFECTS OF NON-SECULAR TERMS IN HETERONUCLEAR DIPOLAR INTERACTION ON CROSS POLARIZATION RELAXATION RATE

Chinese Journal of Magnetic Resonance ›› 1993, Vol. 10 ›› Issue (2): 123-130.

Previous Articles Next Articles

EFFECTS OF NON-SECULAR TERMS IN HETERONUCLEAR DIPOLAR INTERACTION ON CROSS POLARIZATION RELAXATION RATE

Ding Shangwu, Fu Riqiang, Ye Chaohui

State Key Laboratory of Magnetic Resonance and Atomic and Molecular Physics, Wuhan Institute of Physics, The Chinese Academy of Sciences, Wuhan 430071

Received:1992-03-23 Revised:1992-10-27 Published:1993-06-05 Online:2018-01-20

Abstract

Abstract: The cross polarization theory is generalized by taking into consideration the contribution of non-secular part of heteronuclear dipolar interaction Hamiltonian in laboratory frame (NSH) to cross polarization relaxation. The rapid lattice fluctuation (~10⁸Hz) of a spin system will enhance the effect of NSH. The general formula of cross polarization relaxation rate is given. The application of this theory to cross polarization experiments is analysed and discussed.

Key words: Cross polarization, Nonsecular terms, Thermodynamics of spin system, Spin dynamics

Ding Shangwu, Fu Riqiang, Ye Chaohui. EFFECTS OF NON-SECULAR TERMS IN HETERONUCLEAR DIPOLAR INTERACTION ON CROSS POLARIZATION RELAXATION RATE[J]. Chinese Journal of Magnetic Resonance, 1993, 10(2): 123-130.

[1]	DONG Hongchun,ZHANG Zhilan,WANG Ning,TANG Dandan,QIU Zihui,SHU Jie. The Improved Solid-state NMR Quantitative Method on the Bases of Multiple-cross Polarization Technique [J]. Chinese Journal of Magnetic Resonance, 2023, 40(2): 136-147.
[2]	LIANG Li-xin, DENG Feng, HOU Guang-jin. Quantitative Cross Polarization Magic-Angle Spinning NMR Spectroscopy in Solids [J]. Chinese Journal of Magnetic Resonance, 2020, 37(1): 1-15.
[3]	WEI Ling, ZHANG Shan-min. Suppressing Background ¹³C NMR Signal From the Probe Head by Phase Incremented Pulses [J]. Chinese Journal of Magnetic Resonance, 2020, 37(1): 123-130.
[4]	SUN Yi, CHEN Yan-ke, LI Jian-ping, ZHAO Yong-xiang, YANG Jun. Efficiency of Double Cross Polarization in Magic-Angle Spinning Solid-State NMR Studies on Membrane Proteins [J]. Chinese Journal of Magnetic Resonance, 2017, 34(3): 257-265.
[5]	HWANG Dennis W., LIN Yung-Ya, HwANG Lian-Pin. Studies of Magnetic Resonance Imaging with Active Feedback RF Field [J]. Chinese Journal of Magnetic Resonance, 2010, 27(3): 409-416.
[6]	ZHANG Lei, YANG Guang, CHEN Qun. Influence of CP time on Intermolecular Cross Polarization in the Composite of Poly(Ethylene Oxide) and Fullerene [J]. Chinese Journal of Magnetic Resonance, 2005, 22(3): 245-251.
[7]	Hiaoling Wu, Shanmin Zhang. POLARIZATION TRANSFER IN SOLID STATE CPMAS NMR [J]. Chinese Journal of Magnetic Resonance, 1995, 12(4): 429-438.
[8]	Wang Kaixuan, Guo Zhenya, Wang Jingzhong, Ding Tatong, Li Hexuan, Deng Feng, Du Youru. NMR STUDIES ON DEALUMINATED Y ZEOLITES [J]. Chinese Journal of Magnetic Resonance, 1995, 12(2): 119-126.

EFFECTS OF NON-SECULAR TERMS IN HETERONUCLEAR DIPOLAR INTERACTION ON CROSS POLARIZATION RELAXATION RATE

PDF (PC)

Knowledge

Abstract

Cite this article

share this article

References

Related Articles 8

Recommended Articles

Metrics

Comments