Covalent modification of calcium hydroxyapatite surface by grafting phenyl phosphonate moieties
| Autor: | Rainer Traksmaa, Michel Gruselle, Kaia Tõnsuaadu, René Thouvenot, Abdallah Aissa, Mongi Debbabi, Patrick Gredin |
|---|---|
| Rok vydání: | 2007 |
| Předmět: |
Chemistry
Fluorapatite Nuclear magnetic resonance spectroscopy Condensed Matter Physics Phosphonate Apatite Electronic Optical and Magnetic Materials Inorganic Chemistry chemistry.chemical_compound Crystallography Covalent bond visual_art Reagent X-ray crystallography Materials Chemistry Ceramics and Composites visual_art.visual_art_medium Physical and Theoretical Chemistry Hybrid material Nuclear chemistry |
| Zdroj: | Journal of Solid State Chemistry. 180:2273-2278 |
| ISSN: | 0022-4596 |
| DOI: | 10.1016/j.jssc.2007.05.016 |
| Popis: | The reaction between phenyl phosphonic dichloride (C{sub 6}H{sub 5}P(O)Cl{sub 2}) and synthetic calcium hydroxy- and fluorapatite has been investigated. The presence of mono- or polymeric (C{sub 6}H{sub 5}PO) fragment bound to hydroxyapatite was evidenced by IR, and solid-state {sup 31}P NMR spectroscopy. X-ray powder analysis has shown that the apatitic structure remains unchanged during the reaction. In contrast, no reaction was found using fluorapatite. According to the results found for these two different apatites a mechanism was proposed for the formation of covalent P-O-P bonds as the result of a reaction between the C{sub 6}H{sub 5}P(O)Cl{sub 2} organic reagent and (HPO{sub 4}){sup -} and/or OH{sup -} ions of the hydroxyapatite. - Graphical abstract: Representation of the first step of the reaction between the phenyl phosphonic dichloride and the hydroxyl groups on the surface of the apatite, leading to covalent P-O-P bond with elimination of HCl. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|
Full Text from ScienceDirect