1. Luminescent hydroxylapatite nanoparticles by surface functionalization
- Author
-
Department of Geological Sciences, University of Michigan, Ann Arbor, Michigan 48109, Department of Geological Sciences, University of Michigan, Ann Arbor, Michigan 48109; Nuclear Engineering and Radiological Sciences, University of Michigan, Ann Arbor, Michigan 48109; and Materials Science and Engineering, University of Michigan, Ann Arbor, Michigan 48109, Department of Chemical and Materials Engineering, University of Cincinnati, Cincinnati, Ohio 45221, Chemistry Division, Argonne National Laboratory, Argonne, Illinois 60439, Wang, Wei, Shi, Donglu, Lian, Jie, Guo, Yan, Liu, Guokui, Wang, Lumin, Ewing, Rodney C., Department of Geological Sciences, University of Michigan, Ann Arbor, Michigan 48109, Department of Geological Sciences, University of Michigan, Ann Arbor, Michigan 48109; Nuclear Engineering and Radiological Sciences, University of Michigan, Ann Arbor, Michigan 48109; and Materials Science and Engineering, University of Michigan, Ann Arbor, Michigan 48109, Department of Chemical and Materials Engineering, University of Cincinnati, Cincinnati, Ohio 45221, Chemistry Division, Argonne National Laboratory, Argonne, Illinois 60439, Wang, Wei, Shi, Donglu, Lian, Jie, Guo, Yan, Liu, Guokui, Wang, Lumin, and Ewing, Rodney C.
- Abstract
Hydroxylapatite (HA) nanoparticles were functionalized by depositing rare-earth-doped Y2O3Y2O3 nanoparticles on the surface, and the structural evolutions of both HA and Y2O3Y2O3 phases at different annealing temperatures were investigated by x-ray diffraction and transmission electron microscopy. Laser spectroscopy indicated that the surface functionalized HA nanoparticles exhibited strong visible emissions. No visible emissions were observed from rare-earth-doped Y2O3Y2O3 without any substrate, suggesting a doping-induced environmental change of optically active rare-earth elements in the functionalized HA nanoparticles. The luminescent hydroxylapatite nanoparticles may find important applications as a biodegradable substrate for biomarking and drug delivery.
- Published
- 2011