Autor según el artículo: Savchuk O., Carvajal J., Haro-Gonzalez P., Aguiló M., Díaz F.

Departamento: Química Física i Inorgànica

Autor/es de la URV: , / Aguiló Díaz, Magdalena / Carvajal Martí, Joan Josep

Palabras clave: Swir region Nanothermometry Nanoparticles Luminescence Biomedical application

Resumen: We analyzed the potentiality of the short-wavelength infrared (SWIR) emissions of different lanthanide ions (Er3+, Tm3+ and Ho3+) embedded in different hosts for luminescence thermometry. The 1.55 μm emission band generated by Er3+ has different Stark sub-levels that can be used in temperature sensing purposes. However, the thermal sensitivity that can be achieved with this emission is relatively low, ranging from 0.06 to 0.15 % K-1. In the case of Tm3+, the emissions arising from the 3F4 and 3H4 electronically coupled energy levels are useful for luminescence thermometry, with a linear evolution for the intensity ratio in the biological range as the temperature increases, which simplifies the calibration procedure for luminescent thermometers based on this parameter. When co-doped with Ho3+, an efficient energy transfer 2 between the Tm3+ and Ho3+ ions is generated, that results in a new emission line centered at 1.96 μm that can be also used for luminescence thermometry purposes, with an enhanced thermal sensitivity when pumped at 808 nm. The thermal sensitivities achieved with these doping ions are higher than those obtained with Er3+ and are comparable to those reported previously for some lanthanide-doped materials operating in the visible, and in the I- and II-BWs. We demonstrated the potentiality of these emissions in the SWIR region for luminescence thermometry and imaging in ex-vivo experiments by monitoring the increase of temperature induced in chicken breast meat, with an experimental thermal resolution of 0.5 K, below the theoretical value of 0.8 K predicted for particles operating in this spectral region, and a penetration depth of at least 0.5 cm.

Áreas temáticas: Química Planejamento urbano e regional / demografia Odontología Metals and alloys Metallurgy & metallurgical engineering Mechanics of materials Mechanical engineering Materials science, multidisciplinary Materials science Materials chemistry Materiais Matemática / probabilidade e estatística Interdisciplinar Geociências Farmacia Ensino Engenharias iv Engenharias iii Engenharias ii Engenharias i Ciências biológicas i Ciências ambientais Ciências agrárias i Chemistry, physical Biotecnología Astronomia / física Antropologia / arqueologia Administração pública e de empresas, ciências contábeis e turismo

Acceso a la licencia de uso: https://creativecommons.org/licenses/by/3.0/es/

ISSN: 09258388

Direcció de correo del autor: f.diaz@urv.cat magdalena.aguilo@urv.cat joanjosep.carvajal@urv.cat

Identificador del autor: 0000-0003-4581-4967 0000-0001-6130-9579 0000-0002-4389-7298

Página final: 719

Fecha de alta del registro: 2023-10-14

Volumen de revista: 746

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

Enlace a la fuente original: https://www.sciencedirect.com/science/article/abs/pii/S0925838818308533

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

Referencia al articulo segun fuente origial: Journal Of Alloys And Compounds. 746 710-719

Referencia de l'ítem segons les normes APA: Savchuk O., Carvajal J., Haro-Gonzalez P., Aguiló M., Díaz F. (2018). Luminescent nanothermometry using short-wavelength infrared light. Journal Of Alloys And Compounds, 746(), 710-719. DOI: 10.1016/j.jallcom.2018.03.002

DOI del artículo: 10.1016/j.jallcom.2018.03.002

Entidad: Universitat Rovira i Virgili

Año de publicación de la revista: 2018

Página inicial: 710

Tipo de publicación: Journal Publications