Fast high-resolution nuclear magnetic resonance spectroscopy through indirect zero-quantum coherence detection in inhomogeneous fields

In many cases, high-resolution nuclear magnetic resonance （NMR） spectra are virtually impossible to obtain by con- ventional nuclear magnetic resonance methods because of inhomogeneity of magnetic field and inherent heterogeneity of sample. Although conventional intramolecular zero-quantum coherence...

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Bibliographic Details
Published in:Chinese physics B 2014-06, Vol.23 (6), p.158-164
Main Author: 柯汉平 陈浩 林雁勤 韦芝良 蔡淑惠 张志勇 陈忠
Format: Article
Language:English
Subjects:
Acquisitions
Coherence
Heterogeneity
Inhomogeneity
Marketing
Nuclear magnetic resonance
Spectra
Spectroscopy
不均匀性
核磁共振光谱
核磁共振方法
相干检测
量子相干
间接
非均匀电场
高分辨率光谱
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Summary:In many cases, high-resolution nuclear magnetic resonance （NMR） spectra are virtually impossible to obtain by con- ventional nuclear magnetic resonance methods because of inhomogeneity of magnetic field and inherent heterogeneity of sample. Although conventional intramolecular zero-quantum coherence （ZQC） can be used to obtain high-resolution spectrum in inhomogeneous field, the acquisition takes rather long time. In this paper, a spatially encoded intramolecular ZQC technique is proposed to fast acquire high-resolution NMR spectrum in inhomogeneous field. For the first time, the gradient-driven decoding technique is employed to selectively acquire intramolecular ZQC signals. Theoretical analyses and experimental observations demonstrate that high-resolution NMR spectral information can be retrieved within several scans even when the field inhomogeneity is severe enough to erase most spectral information. This work provides a new way to enhance the acquisition efficiency of high-resolution intramolecular ZQC spectroscopy in inhomogeneous fields.
ISSN:1674-1056
2058-3834
1741-4199
DOI:10.1088/1674-1056/23/6/063201