Affiliation:
1. Department of Fundamental Chemistry Institute of Chemistry University of São Paulo Av. Prof. Lineu Prestes 748 São Paulo–SP CEP 05508‐000 Brazil
2. Institut de Recherche de Chimie Paris Chimie ParisTech – CNRS PSL Research University Paris 75005 France
3. Unité de Technologies Chimiques et Biologiques pour la Santé (UTCBS) CNRS (UMR 8258) ‐ U1267 INSERM Faculté de Pharmacie Université Paris Cité Paris 75006 France
Abstract
AbstractThe charging of persistent luminescence using an infrared laser as a power source and an upconversion process is a recently proposed trend in the field of persistent luminescence that allows expansion of the potential applications for these materials. In bioimaging at nanoscale, it allows for increased rechargeability capacity, as the excitation wavelength is fully inside the biological window. In this work, a novel approach is proposed to this phenomenon using energy transfer on associated materials. For this purpose, β‐NaGd0.8Yb0.17Er0.03F4 nanoparticles, known for their efficient upconversion, and Zn1.33Ga1.335Sn0.33Cr0.005O4 nanoparticles, known for their persistent luminescence properties, have been synthesized and associated through a dry impregnation method. The obtained hybrid material is found to present persistent luminescence at 700 nm after charging with a 980 nm laser. A mechanism is proposed to explain this energy transfer process and the capabilities of the hybrid material as rechargeable persistent nanoprobe for in vivo applications are shown.
Funder
Coordenação de Aperfeiçoamento de Pessoal de Nível Superior
Subject
Atomic and Molecular Physics, and Optics,Electronic, Optical and Magnetic Materials
Cited by
9 articles.
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