Autor según el artículo: Savchuk O; Carvajal J; Cesteros Y; Salagre P; Nguyen H; Rodenas A; Massons J; Aguiló M; Díaz F

Departamento: Química Física i Inorgànica

Autor/es de la URV: , / Aguiló Díaz, Magdalena / Carvajal Martí, Joan Josep / Cesteros Fernández, Yolanda / Masons Bosch, Jaime / Salagre Carnero, María Pilar

Palabras clave: Upconversion nanoparticles Thermal mapping Nanothermometry Green synthesis Graphene thermal mapping nanothermometry green synthesis graphene

Resumen: © 2019 Savchuk, Carvajal, Cesteros, Salagre, Nguyen, Rodenas, Massons, Aguiló and Díaz. This study analyzes the mapping of temperature distribution generated by graphene in a glass slide cover after illumination at 808 nm with a good thermal resolution. For this purpose, Er,Yb:NaYF4 nanoparticles prepared by a microwave-assisted solvothermal method were used as upconversion luminescent nanothermometers. By tuning the basic parameters of the synthesis procedure, such as the time and temperature of reaction and the concentration of ethanol and water, we were able to control the size and the crystalline phase of the nanoparticles, and to have the right conditions to obtain 100% of the β hexagonal phase, the most efficient spectroscopically. We observed that the thermal sensitivity that can be achieved with these particles is a function of the size of the nanoparticles and the crystalline phase in which they crystallize. We believe that, with suitable changes, these nanoparticles might be used in the future to map temperature gradients in living cells while maintaining a good thermal resolution.

Áreas temáticas: Química Medicina ii Medicina i Materiais Interdisciplinar General chemistry Farmacia Ciências biológicas iii Ciências biológicas ii Ciências biológicas i Ciências ambientais Chemistry, multidisciplinary Chemistry (miscellaneous) Chemistry (all) Biotecnología Biodiversidade

ISSN: 22962646

Direcció de correo del autor: pilar.salagre@urv.cat f.diaz@urv.cat yolanda.cesteros@urv.cat jaume.masons@urv.cat magdalena.aguilo@urv.cat joanjosep.carvajal@urv.cat

Identificador del autor: 0000-0003-3257-2022 0000-0003-4581-4967 0000-0002-5439-9358 0000-0003-4325-6084 0000-0001-6130-9579 0000-0002-4389-7298

Fecha de alta del registro: 2023-10-14

Volumen de revista: 7

Versión del articulo depositado: info:eu-repo/semantics/publishedVersion

Enlace a la fuente original: https://www.frontiersin.org/articles/10.3389/fchem.2019.00088/full

URL Documento de licencia: http://repositori.urv.cat/ca/proteccio-de-dades/

Referencia al articulo segun fuente origial: Frontiers In Chemistry. 7 (FEB): 88-

Referencia de l'ítem segons les normes APA: Savchuk O; Carvajal J; Cesteros Y; Salagre P; Nguyen H; Rodenas A; Massons J; Aguiló M; Díaz F (2019). Mapping temperature distribution generated by photothermal conversion in graphene film using Er,Yb:NaYF4 nanoparticles prepared by microwave-assisted solvothermal method. Frontiers In Chemistry, 7(FEB), 88-. DOI: 10.3389/fchem.2019.00088

DOI del artículo: 10.3389/fchem.2019.00088

Entidad: Universitat Rovira i Virgili

Año de publicación de la revista: 2019

Tipo de publicación: Journal Publications