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31P-19F rotational-echo, double-resonance nuclear magnetic resonance experiment on fluoridated hydroxyapatite

โœ Scribed by Yong Pan

Book ID
103963799
Publisher
Elsevier Science
Year
1995
Tongue
English
Weight
443 KB
Volume
5
Category
Article
ISSN
0926-2040

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โœฆ Synopsis

This work demonstrates 31P-19F rotational-echo, double-resonance nuclear magnetic resonance (REDOR NMR), a simple experiment used to measure 31P-19F dipolar couplings. 19F-observed 31P-19F REDOR NMR of fluorapatite revealed the 31P-19F connectivities. 31P-observed 31P-19F REDOR NMR determined the nearest 31P-19F distance in fluorapatite. The application on fluoride-treated hydroxyapatite, the principal inorganic constituent of dental enamel and dentine, showed the formation of fluorohydroxyapatite with a surface coverage of less than one unit-cell layer.

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Spin density description of rotational-e
Spin density description of rotational-echo double-resonance, transferred-echo double-resonance and two-dimensional transferred-echo double-resonance solid state nuclear magnetic resonance
โœ Ernst R.H. van Eck; Wiebren S. Veeman ๐Ÿ“‚ Article ๐Ÿ“… 1993 ๐Ÿ› Elsevier Science ๐ŸŒ English โš– 683 KB

The spin density matrix formalism has been applied to rotational-echo double-resonance (REDOR), transferred-echo double-resonance (TEDOR) and two-dimensional (2D) TEDOR experiments in order to obtain an expression for the signal intensities. TEDOR spectra of lSN-labeled glycine were measured with di