31P-19F rotational-echo, double-resonance nuclear magnetic resonance experiment on fluoridated hydroxyapatite.
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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Miami Valley Laboratories, Procter and Gamble Company, Cincinnati, OH 45253-8707, USA.
D001031:Apatites / Q000737:chemistry*; D006801:Humans; D009682:Magnetic Resonance Spectroscopy / Q000379:methods*
D001031:Apatites; C025105:fluorapatite