Erbium Single-Band Nanothermometry in the Third Biological Imaging Window: Potential and Limitations

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Autor(es): dc.contributorUniversité du Québec-
Autor(es): dc.contributorUniversidade Estadual Paulista (Unesp)-
Autor(es): dc.creatorHazra, Chanchal-
Autor(es): dc.creatorSkripka, Artiom-
Autor(es): dc.creatorRibeiro, Sidney J. L. [UNESP]-
Autor(es): dc.creatorVetrone, Fiorenzo-
Data de aceite: dc.date.accessioned2022-02-22T00:52:11Z-
Data de disponibilização: dc.date.available2022-02-22T00:52:11Z-
Data de envio: dc.date.issued2021-06-25-
Data de envio: dc.date.issued2021-06-25-
Data de envio: dc.date.issued2020-11-30-
Fonte completa do material: dc.identifierhttp://dx.doi.org/10.1002/adom.202001178-
Fonte completa do material: dc.identifierhttp://hdl.handle.net/11449/208024-
Fonte: dc.identifier.urihttp://educapes.capes.gov.br/handle/11449/208024-
Descrição: dc.descriptionNear-infrared (NIR) nanothermometers are sought after in biomedicine when it comes to measuring temperatures subcutaneously. Yet, temperature sensing within the third biological imaging window (BW-III), where the highest contrast images can be obtained, remains relatively unexplored. Here, LiErF4/LiYF4 rare-earth nanoparticles (RENPs) are studied as NIR nanothermometers in the BW-III. Under 793 nm excitation, LiErF4/LiYF4RENPs emit around 1540 nm, corresponding to the 4I13/2 → 4I15/2radiative transition of Er3+. The fine Stark structure of this transition allows to delineate intensity regions within the emission band that can be used for single-band ratiometric nanothermometry. These nanothermometers have a relative temperature sensitivity of ≈0.40% °C−1. The temperature-dependent energy transfer to the surrounding solvent molecules plays a significant role in the thermometric properties of the RENPs. In addition, Ce3+ions are doped in the core of the RENPs to examine whether it affects the NIR emission and temperature sensitivity. Ce3+ at 1 mol% marginally influences the downshifting emission intensity of the RENPs, yet increases the relative thermal sensitivity to ≈0.45% °C−1. Furthermore, Ce3+ quenches the visible upconversion emission of the RENPs. Together, LiErF4:Ce3+/LiYF4RENPs enable single-band photoluminescence nanothermometry in the BW-III, with the future possibility of its integration within multifunctional decoupled theranostic nanostructures.-
Descrição: dc.descriptionInstitut National de la Recherche Scientifique Centre Énergie Matériaux et Télécommunications Université du Québec, 1650 Boul. Lionel-Boulet-
Descrição: dc.descriptionInstitute of Chemistry São Paulo State University—UNESP-
Descrição: dc.descriptionInstitute of Chemistry São Paulo State University—UNESP-
Idioma: dc.languageen-
Relação: dc.relationAdvanced Optical Materials-
???dc.source???: dc.sourceScopus-
Palavras-chave: dc.subjectbiological windows-
Palavras-chave: dc.subjectLiErF 4-
Palavras-chave: dc.subjectnanothermometry-
Palavras-chave: dc.subjectnear-infrared emission-
Palavras-chave: dc.subjectrare-earth nanoparticles-
Palavras-chave: dc.subjectupconversion-
Título: dc.titleErbium Single-Band Nanothermometry in the Third Biological Imaging Window: Potential and Limitations-
Tipo de arquivo: dc.typelivro digital-
Aparece nas coleções:Repositório Institucional - Unesp

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