Autor según el artículo: Joan J. Carvajal; Oleksandr A. Savchuk; C. Cascales; M. Aguilo; F. Díaz
Departamento: Química Física i Inorgànica
Autor/es de la URV: CARVAJAL MARTÍ, JOAN JOSEP; Oleksandr A. Savchuk; C. Cascales; AGUILÓ DÍAZ, MAGDALENA; DÍAZ GONZÁLEZ, FRANCISCO MANUEL
Palabras clave: luminescence thermometry core¿shell
Resumen: 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
Grupo de investigación: Física i Cristal.lografia de Materials Física i Cristal·lografia de Nanomaterials
Áreas temáticas: Química Química Chemistry
Acceso a la licencia de uso: https://creativecommons.org/licenses/by/3.0/es/
ISSN: 1944-8244
Identificador del autor: 0000-0002-4389-7298; ; ; 0000-0001-6130-9579; 0000-0003-4581-4967
Fecha de alta del registro: 2017-06-12
Página final: 7273
Volumen de revista: 8
Versión del articulo depositado: info:eu-repo/semantics/acceptedVersion
Programa de financiación: 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
URL Documento de licencia: https://repositori.urv.cat/ca/proteccio-de-dades/
Entidad: Universitat Rovira i Virgili
Año de publicación de la revista: 2016
Página inicial: 7266
Tipo de publicación: Article Artículo Article
Repositori URV