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Optical nuclear polarization for sensitivity enhancement of H-2 NMR single-crystal studies

Buntkowsky, G. and Hoffmann, W. and Vieth, H. M. (1999):
Optical nuclear polarization for sensitivity enhancement of H-2 NMR single-crystal studies.
In: Applied Magnetic Resonance, pp. 489-502, 17, (2-3), [Online-Edition: http://apps.webofknowledge.com/full_record.do?product=WOS&se...],
[Article]

Abstract

A gain in detection sensitivity of more than three orders of magnitude is achieved in high-resolution solid-stare H-2 nuclear magnetic resonance of monocrystalline fluorene-d(10) by applying optical nuclear polarization via excited tripler states of acridine-h, guest molecules. The sensitivity gain is utilized to measure the angular dependence (rotation pattern) of the H-2 nuclear magnetic resonance lines. In this way the principal values and orientations of all H-2 quadrupolar tensors are determined. Except for the methylene deuterons. all tensors belonging to the same molecule have one principal axis in common, namely the axis perpendicular to the molecular plane, showing that in the crystal lattice the fluorene molecule is in a planar configuration.

Item Type: Article
Erschienen: 1999
Creators: Buntkowsky, G. and Hoffmann, W. and Vieth, H. M.
Title: Optical nuclear polarization for sensitivity enhancement of H-2 NMR single-crystal studies
Language: English
Abstract:

A gain in detection sensitivity of more than three orders of magnitude is achieved in high-resolution solid-stare H-2 nuclear magnetic resonance of monocrystalline fluorene-d(10) by applying optical nuclear polarization via excited tripler states of acridine-h, guest molecules. The sensitivity gain is utilized to measure the angular dependence (rotation pattern) of the H-2 nuclear magnetic resonance lines. In this way the principal values and orientations of all H-2 quadrupolar tensors are determined. Except for the methylene deuterons. all tensors belonging to the same molecule have one principal axis in common, namely the axis perpendicular to the molecular plane, showing that in the crystal lattice the fluorene molecule is in a planar configuration.

Journal or Publication Title: Applied Magnetic Resonance
Volume: 17
Number: 2-3
Uncontrolled Keywords: doped aromatic crystals radical pair formation deuteron relaxation excited-states fluorene onp c13h10 regime
Divisions: 07 Department of Chemistry
07 Department of Chemistry > Physical Chemistry
Date Deposited: 27 Oct 2014 20:37
Official URL: http://apps.webofknowledge.com/full_record.do?product=WOS&se...
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287GA Times Cited:5 Cited References Count:50

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