Spectroscopic and Theoretical Tools Unravel the Thermally–Stabilized Behavior of Eu3+-Based Complex Incorporated in Sustainable Urethanesil Film

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Autor(es): dc.contributorUniversidade Estadual Paulista (UNESP)-
Autor(es): dc.contributorUniversity of Ribeirão Preto (UNAERP)-
Autor(es): dc.creatorJosé Caixeta, Fábio-
Autor(es): dc.creatorFigueiredo Saraiva, Leonardo-
Autor(es): dc.creatorDamasio de Freitas, Beatriz-
Autor(es): dc.creatorDomingos Onishi, Bruno Seiki-
Autor(es): dc.creatorSantagneli, Silvia Helena-
Autor(es): dc.creatorBortoletto-Santos, Ricardo-
Autor(es): dc.creatorPires, Ana Maria-
Autor(es): dc.creatorLima Ribeiro, Sidney José-
Data de aceite: dc.date.accessioned2025-08-21T21:01:29Z-
Data de disponibilização: dc.date.available2025-08-21T21:01:29Z-
Data de envio: dc.date.issued2025-04-29-
Data de envio: dc.date.issued2024-12-31-
Fonte completa do material: dc.identifierhttp://dx.doi.org/10.1002/asia.202401612-
Fonte completa do material: dc.identifierhttps://hdl.handle.net/11449/298558-
Fonte: dc.identifier.urihttp://educapes.capes.gov.br/handle/11449/298558-
Descrição: dc.descriptionDespite significant ongoing efforts to develop luminescent rare-earth β-diketonate complexes, achieving thermal stability remains a persistent challenge. In this study, we present a thermally stable organic-inorganic hybrid (OIH) compound, SiCO-[Eu(tta)3(H2O)2], where tta=thenoyltrifluoroacetonate, Si=3-(triethoxysilyl)propyl isocyanate, and CO=castor oil. Spectroscopic analysis reveals that while [Eu(tta)3(H2O)2] in its powder form undergoes irreversible photoluminescence quenching at 60 °C and embedding it in the SiCO polymer preserves its luminescence even after being annealed up to 180 °C. Notably, the hybrid film maintains stable emission properties after multiple heating-cooling cycles (29–70 °C) and exhibits reversible emission behavior. This finding is attributed to polymer-complex interactions and/or the replacement of water molecules with polymer coordination, resulting in a more rigid environment in the Eu3+ coordination sphere. The thermal dependence of intramolecular energy transfer (IET) indicates that the decrease in Eu3+ luminescence is linked to faster depopulation of the emitting level, driven by non-radiative relaxation and back-energy transfer. This outcome enabled us to strategize approaches to mitigate luminescence quenching in OIH while providing valuable insights into the photophysical properties of these compounds, thus offering a guide towards how we can boost the capabilities of these materials.-
Descrição: dc.descriptionInstitute of Chemistry São Paulo State University (UNESP)-
Descrição: dc.descriptionSchool of Technology and Sciences São Paulo State University (UNESP)-
Descrição: dc.descriptionInstitute of Biosciences Humanities and Exact Sciences São Paulo State University (UNESP)-
Descrição: dc.descriptionPostgraduate Program in Environmental Technology University of Ribeirão Preto (UNAERP)-
Descrição: dc.descriptionInstitute of Chemistry São Paulo State University (UNESP)-
Descrição: dc.descriptionSchool of Technology and Sciences São Paulo State University (UNESP)-
Descrição: dc.descriptionInstitute of Biosciences Humanities and Exact Sciences São Paulo State University (UNESP)-
Idioma: dc.languageen-
Relação: dc.relationChemistry - An Asian Journal-
???dc.source???: dc.sourceScopus-
Palavras-chave: dc.subjectEu3+ β-diketonate complex-
Palavras-chave: dc.subjectHybrid material-
Palavras-chave: dc.subjectPhotonics-
Palavras-chave: dc.subjectSustainability-
Palavras-chave: dc.subjectThermal stability-
Título: dc.titleSpectroscopic and Theoretical Tools Unravel the Thermally–Stabilized Behavior of Eu3+-Based Complex Incorporated in Sustainable Urethanesil Film-
Tipo de arquivo: dc.typelivro digital-
Aparece nas coleções:Repositório Institucional - Unesp

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