Heteronuclear-filtered ^(1)H homonuclear multi-quantum correlation experiment at 100 kHz magic-angle spinning Dedicated to Professor Chaohui Ye on the occasion of his 80th birthday  

作　　者：Mingji Zheng Shuangqin Zeng Xiumei Wang Xiuzhi Gao Qiang Wang Jun Xu Feng Deng 

机构地区：[1]State Key Laboratory of Magnetic Resonance and Atomic and Molecular Physics,Wuhan Center for Magnetic Resonance,Wuhan Institute of Physics and Mathematics,Innovation Academy for Precision Measurement Science and Technology,Chinese Academy of Sciences,Wuhan,430071,China [2]SINOPEC Research Institute of Petroleum Processing,Beijing,100083,China [3]Bruker(Beijing)Scientific Technology Co.Ltd.,Beijing,100192,China [4]University of Chinese Academy of Sciences,Beijing,100049,China

出　　处：《Magnetic Resonance Letters》2022年第4期266-275,共10页磁共振快报（英文）

基　　金：the National Natural Science Foundation of China(Grants,22161132028,221721177,22127801,U1932218 and 21733013);Hubei Provincial Natural Science Foundation(2021CFA021);Youth Innovation Promotion Association,Chinese Academy of Sciences(2019326)。

摘　　要：Remarkable advances in fast magic-angle spinning(MAS)techniques significantly improve the resolution of^(1)H solid-state nuclear magnetic resonance(NMR)spectra.Here,we introduce a heteronuclear-filtered^(1)H homonuclear multi-quantum(MQ)correlation strategy available at a MAS rate of 100 kHz by combining^(1)H{X}heteronuclear-filtered methods and^(1)H homonuclear MQ correlation experiments.The proposed strategy was applied to selectively extract^(1)H signals of aluminum lactate(Al-Lac)in a mixture of Al-Lac and zinc lactate(Zn-Lac)using 27Al-filtered methods(i.e.,^(1)H{27Al}heteronuclear multiple quantum correlation(HMQC)or^(1)H{27Al}symmetry-based resonance-echo saturationpulse double-resonance(S-RESPDOR)).We demonstrate that incorporating these 27Al-filtered methods into two-dimensional(2D)^(1)He^(1)H double-quantum(DQ)/single-quantum(SQ),triple-quantum(TQ)/SQ,and even three-dimensional(3D)27Al/^(1)H(DQ)/^(1)H(SQ)experiments can facilitate the acquisition of spectra without signal overlap and targeted characterization of the^(1)H species surrounding 27Al sites.The proposed strategy is considered to efficiently extract key structural information from complex spin systems.

关 键 词：Solid-state NMR spectroscopy Proton Heteronuclear filter Homonuclear correlation Multi-quantum Ultra-fast magic angle spinning 

分 类 号：O482.532[理学—固体物理]