Fluorohydroxyapatite has extensive applications in teeth and bone materials due to its high biocompatibility and osteoconductive.
However, the effects of different fluorine contents on the structure have seldom been studied systematically. The resistance of
fluorohydroxyapatite to acids depends largely on its chemical structure，so it is of great interest to determine its structure that
prevents the process of erosion.
Recently, Prof. Wang junfeng's group in High Magnetic Field Laboratory studied the effects of fluorine on the structure of
fluorohydroxyapatite by solid-state NMR collaborate with the Prof. Zhu peizhi's group from yangzhou university.
In this research , a series of fluorohydroxyapatites were synthesised and characterized to evaluate the effects of fluorine
on the structure of hydroxyapatite. For the first time scientists observed the well-resolved Ca(I) and Ca(II)
signal change in fluorohydroxylapatite with different fluorine contents at natural abundance. Compared with small
variations of 31P NMR chemical shifts induced by the incorporation of fluorine, the significant 43Ca NMR signal change
of Ca(II) ions and 1H NMR signal change of OH- ions indicate that the fluorine perturbs the chemical environment of
Ca(II) ions and OH- ions more than phosphorus atoms. This work was published online in Journal of Materials Chemistry B.
Paper link: http://pubs.rsc.org/en/Content/ArticleLanding/2015/TB/c4tb01561d#divAbstract
