Utilize este identificador para referenciar este registo: http://hdl.handle.net/1822/42619

TítuloStructural, UV-VIS-NIR luminescence and decay associated spectral profiles of Sm3+ doped calcium phosphate glass
AutorNandyala, Sooraj Hussain
Hungerford, Graham
Rao, J. L.
Leonor, I. B.
Pires, R. A.
Reis, R. L.
Palavras-chaveSm3+ glass
Time resolved emission spectra
Decay associated spectra
Calcium phosphate glass
DataMai-2016
EditoraVBRI Press
CitaçãoNandyala S. H., Hungerford G., Rao J. L., Leonor I. B., Pires R. A., Reis R. L. Structural, UV-VIS-NIR luminescence and decay associated spectral profiles of Sm 3 doped calcium phosphate glass, Advanced Materials Letters, Vol. 7, Issue 9, pp. 702-707, doi:10.5185/amlett.2016.6244, 2016
ResumoRare-Earths or Lanthanide ions (Ln3+) are a group of elements from lanthanum to lutetium (Z=57 to 71), plus scandium (Z=21) and Yttrium (Z=39). Ln3+ doped glasses have been included within the Hydroxyapatite (HA) matrix, inducing promising changes in their physicochemical and biological properties. Because of the lanthanides' ability to modulate bone metabolism, inclusion of Ln3+ in the composition of calcium phosphate biomaterials for bone tissue regeneration has been considered. Earlier, the authors studied Samarium (Sm3+) doped glass-reinforced hydroxyapatite with enhanced osteoblastic performance and antibacterial properties for bone tissue regeneration. Moreover, Sm3+ substituted calcium phosphate is a non-hazardous material that luminesces under UV-visible light. In this work, we study a calcium phosphate host glass doped with samarium oxide, which has been prepared and characterized by FTIR, SEM, EDS analysis, and X-ray mapping. Pumping with two visible excitation sources at 405nm and 423nm, we observed intense, sharp Green, yellow, orange emission peaks (4G5/2â 6H5/2,7/2, 9/2) at 560nm, 596nm and 643nm respectively. A weak red emission was also observed at 704nm. Two NIR peaks at 1134nm (4G5/2â 6F11/2) and 1310 nm (4G5/2â 6F9/2) are monitored by using an excitation at 1060nm. Furthermore, by making use of time-resolved emission spectroscopy (TRES) measurements, the decay associated spectra were obtained allowing the kinetic parameters for the different emission bands to be elucidated and compared with steady state emission spectra.
Tipoarticle
URIhttp://hdl.handle.net/1822/42619
DOI10.5185/amlett.2016.6244
ISSN0976-3961
Arbitragem científicayes
AcessoopenAccess
Aparece nas coleções:3B’s - Artigos em revistas/Papers in scientific journals

Ficheiros deste registo:
Ficheiro Descrição TamanhoFormato 
18819-Sooraj_2016.pdf1,12 MBAdobe PDFVer/Abrir

Partilhe no FacebookPartilhe no TwitterPartilhe no DeliciousPartilhe no LinkedInPartilhe no DiggAdicionar ao Google BookmarksPartilhe no MySpacePartilhe no Orkut
Exporte no formato BibTex mendeley Exporte no formato Endnote Adicione ao seu Currículo DeGóis