Autor segons l'article: Joan J. Carvajal; Oleksandr A. Savchuk; C. Cascales; M. Aguilo; F. Díaz
Departament: Química Física i Inorgànica
Autor/s de la URV: CARVAJAL MARTÍ, JOAN JOSEP; Oleksandr A. Savchuk; C. Cascales; AGUILÓ DÍAZ, MAGDALENA; DÍAZ GONZÁLEZ, FRANCISCO MANUEL
Paraules clau: luminescence thermometry core¿shell
Resum: We studied the temperature-dependent luminescence of GdVO4 nanoparticles co-doped with Er3+ (1 mol %) and Yb3+ (20 mol %) and determined their thermal sensing properties through the fluorescence intensity ratio (FIR) technique. We also analyzed how a silica coating, in a core−shell structure, affects the temperature sensing properties of this material. Spectra were recorded in the range of biological temperatures (298−343 K). The
absolute sensitivity for temperature determination calculated for the core−shell nanoparticles is double the one calculated for bare nanoparticles, achieving a thermal resolution of 0.4 K. Moreover, silica-coated nanoparticles show good dispersibility in different solvents, such as water, DMSO, and methanol. Also, they show good luminescence stability without interactions with solvent molecules. Furthermore, we also observed that the silica coating shell prevents progressive heating of the nanoparticles during prolonged excitation periods with the 980 nm laser, preventing effects on their thermometric applications
Grup de recerca: Física i Cristal.lografia de Materials Física i Cristal·lografia de Nanomaterials
Àrees temàtiques: Química Química Chemistry
Accès a la llicència d'ús: https://creativecommons.org/licenses/by/3.0/es/
ISSN: 1944-8244
Identificador de l'autor: 0000-0002-4389-7298; ; ; 0000-0001-6130-9579; 0000-0003-4581-4967
Data d'alta del registre: 2017-06-12
Pàgina final: 7273
Volum de revista: 8
Versió de l'article dipositat: info:eu-repo/semantics/acceptedVersion
Enllaç font original: http://pubs.acs.org/doi/abs/10.1021/acsami.6b01371
Programa de finançament: plan; RETOS; MAT2013-47395-C4-4-R; MAT2013-47395-C4-4-R plan; RETOS; TEC2014-55948-R; TEC2014-55948-R plan; RETOS; MAT2014-56607-R; MAT2014-56607-R altres; Grupos consolidados; 2014SGR1358.; 2014SGR1358. altres; FI; 2015FI B2 00136; 2015FI B2 00136 altres; Icrea academia; 2010ICREA-02; 2010ICREA-02
DOI de l'article: 10.1021/acsami.6b01371
Entitat: Universitat Rovira i Virgili
Any de publicació de la revista: 2016
Pàgina inicial: 7266
Tipus de publicació: Article Artículo Article
Repositori URV