Cross-polarization in 14N overtone NMR spectroscopy of solids

Dong Kuk Lee; A. Ramamoorthy

doi:10.1016/S0009-2614(98)00006-2

Cross-polarization in ¹⁴N overtone NMR spectroscopy of solids

Dong Kuk Lee, A. Ramamoorthy

Dept. of Fine Chemistry

University of Michigan, Ann Arbor

Research output: Contribution to journal › Article › peer-review

15 Scopus citations

Abstract

Several versions of cross-polarization (CP) sequences are analyzed in order to improve the sensitivity of ¹⁴N overtone NMR of biological solids. Optimum conditions are determined from experiments on a single crystalline sample of a model peptide, N-acetyl-D,L-valine, for an efficient CP from ¹H to ¹⁴N overtone frequency. Experimental results infer that a CP sequence consisting of an amplitude modulated spin-locking of ¹⁴N overtone frequency during the CP period followed by a composite 90° postpulse is efficient in transferring the proton dipolar order to the observable overtone signal.

Original language	English
Pages (from-to)	398-402
Number of pages	5
Journal	Chemical Physics Letters
Volume	286
Issue number	5-6
DOIs	https://doi.org/10.1016/S0009-2614(98)00006-2
State	Published - 17 Apr 1998

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title = "Cross-polarization in 14N overtone NMR spectroscopy of solids",

abstract = "Several versions of cross-polarization (CP) sequences are analyzed in order to improve the sensitivity of 14N overtone NMR of biological solids. Optimum conditions are determined from experiments on a single crystalline sample of a model peptide, N-acetyl-D,L-valine, for an efficient CP from 1H to 14N overtone frequency. Experimental results infer that a CP sequence consisting of an amplitude modulated spin-locking of 14N overtone frequency during the CP period followed by a composite 90° postpulse is efficient in transferring the proton dipolar order to the observable overtone signal.",

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AU - Lee, Dong Kuk

AU - Ramamoorthy, A.

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N2 - Several versions of cross-polarization (CP) sequences are analyzed in order to improve the sensitivity of 14N overtone NMR of biological solids. Optimum conditions are determined from experiments on a single crystalline sample of a model peptide, N-acetyl-D,L-valine, for an efficient CP from 1H to 14N overtone frequency. Experimental results infer that a CP sequence consisting of an amplitude modulated spin-locking of 14N overtone frequency during the CP period followed by a composite 90° postpulse is efficient in transferring the proton dipolar order to the observable overtone signal.

AB - Several versions of cross-polarization (CP) sequences are analyzed in order to improve the sensitivity of 14N overtone NMR of biological solids. Optimum conditions are determined from experiments on a single crystalline sample of a model peptide, N-acetyl-D,L-valine, for an efficient CP from 1H to 14N overtone frequency. Experimental results infer that a CP sequence consisting of an amplitude modulated spin-locking of 14N overtone frequency during the CP period followed by a composite 90° postpulse is efficient in transferring the proton dipolar order to the observable overtone signal.

UR - https://www.scopus.com/pages/publications/0032540025

U2 - 10.1016/S0009-2614(98)00006-2

DO - 10.1016/S0009-2614(98)00006-2

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VL - 286

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JO - Chemical Physics Letters

JF - Chemical Physics Letters

IS - 5-6

ER -

Cross-polarization in ¹⁴N overtone NMR spectroscopy of solids

Abstract

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