Carbon dots on LAPONITE® hybrid nanocomposites: solid-state emission and inter-aggregate energy transfer

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Autor(es): dc.contributorUniversity of Aveiro-
Autor(es): dc.contributorUniversidade Estadual Paulista (UNESP)-
Autor(es): dc.contributorUniversity of Ribeirão Preto-UNAERP-
Autor(es): dc.contributorUniversidade de São Paulo (USP)-
Autor(es): dc.creatorOnishi, Bruno S. D.-
Autor(es): dc.creatorCarneiro Neto, Albano N.-
Autor(es): dc.creatorBortolleto-Santos, Ricardo-
Autor(es): dc.creatorMasterlaro, Valmor R.-
Autor(es): dc.creatorCarlos, Luís D.-
Autor(es): dc.creatorFerreira, Rute A. S.-
Autor(es): dc.creatorRibeiro, Sidney J. L.-
Data de aceite: dc.date.accessioned2025-08-21T17:05:45Z-
Data de disponibilização: dc.date.available2025-08-21T17:05:45Z-
Data de envio: dc.date.issued2025-04-29-
Data de envio: dc.date.issued2024-03-07-
Fonte completa do material: dc.identifierhttp://dx.doi.org/10.1039/d3nr06336d-
Fonte completa do material: dc.identifierhttps://hdl.handle.net/11449/300798-
Fonte: dc.identifier.urihttp://educapes.capes.gov.br/handle/11449/300798-
Descrição: dc.descriptionThis study delves into the photoluminescent characteristics of solid-state hybrid carbon dots/LAPONITE® (CDLP). These hybrid materials were synthesized using the hydrothermal method with a precise pH control set at 8.5. The LAPONITE® structure remains intact without structural collapse, and we detected the possible deposition of carbon dots (CDs) aggregates on the clay mineral's edges. The use of different concentrations of citric acid (10-, 6-, 2- and 1-times weight/weight of LAPONITE® mass, maintaining the 1 : 1 molar ratio with ethylenediamine) during synthesis results in different CDs concentrations in CDLP-A (low precursors concentration) and CDLP-D (high concentration) with an amorphous structure and average size around 2.8-3.0 nm. The CDLP displayed visible photoluminescence emission in aqueous and powder, which the last underwent quenching according to lifetimes and quantum yield measurements. Low-temperature measurements revealed an enhancement of the non-radiative pathways induced by aggregation. Energy transfer modelling based on Förster-Dexter suggests an approximate mean distance of 9.5 nm between clusters of CDs.-
Descrição: dc.descriptionDepartment of Physics CICECO - Aveiro Institute of Materials University of Aveiro-
Descrição: dc.descriptionInstitute of Chemistry São Paulo State University-UNESP, Araraquara-
Descrição: dc.descriptionPostgraduate Program in Environmental Technology University of Ribeirão Preto-UNAERP, Ribeirão Preto-
Descrição: dc.descriptionSão Carlos Institute of Chemistry University of São Paulo-USP, São Carlos-
Descrição: dc.descriptionInstitute of Chemistry São Paulo State University-UNESP, Araraquara-
Formato: dc.format6286-6295-
Idioma: dc.languageen-
Relação: dc.relationNanoscale-
???dc.source???: dc.sourceScopus-
Título: dc.titleCarbon dots on LAPONITE® hybrid nanocomposites: solid-state emission and inter-aggregate energy transfer-
Tipo de arquivo: dc.typelivro digital-
Aparece nas coleções:Repositório Institucional - Unesp

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