Evaluation of europium-doped HA/'beta'TCP ratio fluorescence in biphasic calcium phosphate nanocomposites controlled by the pH value during

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dc.contributor.authorSILVA, FLAVIA R.O.
dc.contributor.authorLIMA, NELSON B.
dc.contributor.authorGUILHEN, SABINE N.
dc.contributor.authorCOURROL, LILIA C.
dc.contributor.authorBRESSIANI, ANA H.A.
dc.coverageInternacionalpt_BR
dc.date.accessioned2016-11-09T17:09:07Z
dc.date.available2016-11-09T17:09:07Z
dc.date.issued2016pt_BR
dc.description.abstractEuropium-doped hydroxyapatite (HA), beta-tricalcium phosphate (β-TCP) and biphasic phosphate nanopowders were synthesized by co-precipitation method and their crystal structures and fluorescence properties were investigated depending on the pH of the starting solution. In the range of pH 6–10, HA and β-TCP phases coexist. The β-TCP proportion increased as the pH of the solution decreased, while HA yields decreased. At pH below 6, monophasic β-TCP powder was obtained after thermal treatment. In particular, HA and β-TCP can be used as luminescent materials when activated by Eu3þ ions in substitution of Ca2þ ions. Herein, the Eu3þ ions doped HA and β-TCP phase composition were analyzed in order to investigate the fluorescence emission of the HA, β-TCP and biphasic compounds. Eu-doped HA exhibited a red-orange emission at 575 nm with several minor peaks at 610–640 nm, while Eu-doped β- TCP had an unexpected strong red emission at 610–620 nm and a secondary band at 590–600 nm. In fact, the Eu:β-TCP integrated emission area is almost 20-fold higher than Eu:HA for the same europium ion concentration. These results demonstrate the potential of Eu:β-TCP as biomarker for medical applications, as drug release and targeting based on their luminescent propertiespt_BR
dc.format.extent177-182pt_BR
dc.identifier.citationSILVA, FLAVIA R.O.; LIMA, NELSON B.; GUILHEN, SABINE N.; COURROL, LILIA C.; BRESSIANI, ANA H.A. Evaluation of europium-doped HA/'beta'TCP ratio fluorescence in biphasic calcium phosphate nanocomposites controlled by the pH value during. <b>Journal of Luminescence</b>, v. 180, p. 177-182, 2016. DOI: <a href="https://dx.doi.org/10.1016/j.jlumin.2016.08.030">10.1016/j.jlumin.2016.08.030</a>. Disponível em: http://repositorio.ipen.br/handle/123456789/26769.
dc.identifier.doi10.1016/j.jlumin.2016.08.030pt_BR
dc.identifier.issn0022-2313pt_BR
dc.identifier.orcidhttps://orcid.org/0000-0003-2604-1225
dc.identifier.orcidhttps://orcid.org/0000-0002-6444-9224
dc.identifier.percentilfi73.37
dc.identifier.urihttp://repositorio.ipen.br/handle/123456789/26769
dc.identifier.vol180pt_BR
dc.relation.ispartofJournal of Luminescencept_BR
dc.rightsopenAccesspt_BR
dc.subjectevaluation
dc.subjectdoped materials
dc.subjecteuropium
dc.subjectapatites
dc.subjectcalcium phosphates
dc.subjectphosphates
dc.subjectfluorescence
dc.subjectsynthesis
dc.subjectnanocomposites
dc.subjectph value
dc.titleEvaluation of europium-doped HA/'beta'TCP ratio fluorescence in biphasic calcium phosphate nanocomposites controlled by the pH value duringpt_BR
dc.typeArtigo de periódicopt_BR
dspace.entity.typePublication
ipen.autorANA HELENA DE ALMEIDA BRESSIANI
ipen.autorSABINE NEUSATZ GUILHEN
ipen.autorNELSON BATISTA DE LIMA
ipen.autorFLAVIA RODRIGUES DE OLIVEIRA SILVA
ipen.codigoautor96
ipen.codigoautor5931
ipen.codigoautor550
ipen.codigoautor5910
ipen.contributor.ipenauthorANA HELENA DE ALMEIDA BRESSIANI
ipen.contributor.ipenauthorSABINE NEUSATZ GUILHEN
ipen.contributor.ipenauthorNELSON BATISTA DE LIMA
ipen.contributor.ipenauthorFLAVIA RODRIGUES DE OLIVEIRA SILVA
ipen.date.recebimento16-11pt_BR
ipen.identifier.fi2.686pt_BR
ipen.identifier.ipendoc22635pt_BR
ipen.range.fi1.500 - 2.999
ipen.range.percentilfi50.00 - 74.99
ipen.type.genreArtigo
relation.isAuthorOfPublication04d834e7-faee-4461-8fa7-5e5071ec48cc
relation.isAuthorOfPublicationc3932232-0001-4122-bc0e-9109d11f8bec
relation.isAuthorOfPublication92984f2d-b6bd-4cd9-950a-e1105bf78d83
relation.isAuthorOfPublicationb1aa6134-5ebc-46f0-ada3-605eaec3a986
relation.isAuthorOfPublication.latestForDiscoveryb1aa6134-5ebc-46f0-ada3-605eaec3a986
sigepi.autor.atividadeSILVA, FLAVIA R.O.:5910:-1:S
sigepi.autor.atividadeLIMA, NELSON B.:550:730:N
sigepi.autor.atividadeGUILHEN, SABINE N.:5931:511:N
sigepi.autor.atividadeBRESSIANI, ANA H.A.:96:720:N
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