固体核磁共振魔角旋转条件下的定量交叉极化技术(英文)

梁力鑫; 邓风; 侯广进

doi:10.11938/cjmr20192779

波谱学杂志 >

2020 , Vol. 37 >Issue 1: 1 - 15

DOI: https://doi.org/10.11938/cjmr20192779

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固体核磁共振魔角旋转条件下的定量交叉极化技术(英文)

梁力鑫 ,
邓风 ,
侯广进

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1. 催化基础国家重点实验室, 洁净能源国家实验室, 能源材料化学协同创新中心, 中国科学院大连化学物理研究所, 辽宁大连 116023;
2. 波谱与原子分子物理国家重点实验室, 武汉磁共振中心(中国科学院武汉物理与数学研究所), 湖北武汉 430071;
3. 中国科学院大学, 北京 100049

收稿日期: 2019-08-29

网络出版日期: 2019-10-16

基金资助

the National Natural Science Foundation of China (21773230); Liaoning Revitalization Talents Program (XLYC1807207); Innovation Foundation of Dalian Institute of Chemical Physics (Y7611105T5).

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Quantitative Cross Polarization Magic-Angle Spinning NMR Spectroscopy in Solids

LIANG Li-xin ,
DENG Feng ,
HOU Guang-jin

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1. State Key Laboratory of Catalysis, National Laboratory for Clean Energy, Collaborative Innovation Center of Chemistry for Energy Materials, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, China;
2. State Key Laboratory of Magnetic Resonance and Atomic and Molecular Physics, National Center for Magnetic Resonance in Wuhan(Wuhan Institute of Physics and Mathematics, Chinese Academy of Sciences), Wuhan 430071, China;
3. University of Chinese Academy of Sciences, Beijing 100049, China

Received date: 2019-08-29

Online published: 2019-10-16

Supported by

the National Natural Science Foundation of China (21773230); Liaoning Revitalization Talents Program (XLYC1807207); Innovation Foundation of Dalian Institute of Chemical Physics (Y7611105T5).

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摘要

交叉极化与魔角旋转结合（CP/MAS）的方法已经成为增强固体核磁共振（NMR）检测灵敏度最重要的技术之一.CP/MAS技术的应用大大提高了固体NMR谱图的采集效率.然而，I-S偶极耦合作用、旋转坐标系下的自旋-晶格弛豫、分子运动，以及样品中丰核的分布情况等因素，通常会导致CP/MAS谱图失去定量作用.近年来，多个研究组通过改进或者设计新型固体NMR脉冲序列，获得了基于CP的可用于定量分析的固体NMR谱图.本综述首先简要介绍了CP及CP动力学，随后介绍了一系列基于CP的定量固体NMR信号增强技术，具体包括ramped-amplitude CP（RAMP-CP）、multiple-contact CP、quantification of CP（QCP）、Lee-Goldburg frequency modulated CP（LG-FMCP）和quantitative CP（QUCP）.

关键词： 固体核磁共振; 定量核磁共振; 定量交叉极化; 弛豫时间

本文引用格式

梁力鑫 , 邓风 , 侯广进 . 固体核磁共振魔角旋转条件下的定量交叉极化技术(英文)[J]. 波谱学杂志, 2020 , 37(1) : 1 -15 . DOI: 10.11938/cjmr20192779

Abstract

The combination of cross polarization and magic-angle spinning (CP/MAS), is a routine technique for signal enhancement in solid-state nuclear magnetic resonance (NMR) spectrum. With CP/MAS, the acquisition efficiency of solid-state NMR experiments can be improved greatly. However, the enhanced signal is not quantitative according to the different CP dynamics dominated by several factors including heteronuclear dipolar couplings, spin-lattice relaxation times in the rotating frame, molecular motions, number of around abundant spins, and so on. Over the years, numerous efforts have been made to obtain quantitative CP/MAS spectroscopy. This review firstly briefly illustrated the introduction of CP and CP dynamics, and then a series of quantitative NMR methods based on CP were introduced, including ramped-amplitude CP (RAMP-CP), multiple-contact CP, quantification of CP (QCP), Lee-Goldburg frequency modulated CP (LG-FMCP) and quantitative CP (QUCP).

Key words： solid state NMR; quantitative NMR; quantitative cross polarization; relaxation time

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