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	Fast high-resolution 2D correlation spectroscopy in inhomogeneous fields via Hadamard intermolecular multiple quantum coherences technique
	Cai, Congbo ; Gao, Fenglian ; Cai, Shuhui ; Huang, Yuqing ; Chen, Zhong ; Chen Z(陈忠)
	2011-05-23
关键词	Intermolecular multiple quantum coherence Hadamard COSY High-resolution spectra Inhomogeneous field
英文摘要	Recently, a method based on intermolecular multiple quantum coherences (iMQCs) has been proposed to obtain high-resolution 2D COSY spectra in inhomogeneous fields via 3D acquisitions. However, the very long acquisition time prevents its practical application. To overcome this shortage, the Hadamard technique was applied for the iMQC method in this paper. For the new pulse sequence, the direct frequency-domain excitation is used in the first indirect detection dimension, so the 3D acquisition was replaced by an array of 20 acquisitions. The acquisition time can be reduced to 10 min. The resulting spectra retain useful structural information including chemical shifts and multiplet patterns of J coupling even when the inhomogeneous line broadening leads to overlap of neighboring diagonal resonances in the conventional COSY spectrum. The experimental results are consistent with the theoretical predictions and computer simulations. The new sequence may provide a time-efficient way for the studies of chemical solution in inhomogeneous fields. (C) 2011 Elsevier Inc. All rights reserved.; NNSF of China[10974164, 10875101]; Fundamental Research Funds for the Central Universities[2010121101]; NSF of Fujian Province of China[2009J05087]
语种	英语
出版者	ACADEMIC PRESS INC ELSEVIER SCIENCE
内容类型	期刊论文
源URL	[http://dx.doi.org/doi:10.1016/j.jmr.2011.05.008]
专题	化学化工－已发表论文
推荐引用方式 GB/T 7714	Cai, Congbo,Gao, Fenglian,Cai, Shuhui,et al. Fast high-resolution 2D correlation spectroscopy in inhomogeneous fields via Hadamard intermolecular multiple quantum coherences technique[J],2011.
APA	Cai, Congbo,Gao, Fenglian,Cai, Shuhui,Huang, Yuqing,Chen, Zhong,&陈忠.(2011).Fast high-resolution 2D correlation spectroscopy in inhomogeneous fields via Hadamard intermolecular multiple quantum coherences technique..
MLA	Cai, Congbo,et al."Fast high-resolution 2D correlation spectroscopy in inhomogeneous fields via Hadamard intermolecular multiple quantum coherences technique".(2011).

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