| Texto completo | |
| Autor(es): |
Bispo Jr, Airton G.
;
Saraiva, Leonardo F.
;
Lima, Sergio A. M.
;
Pires, Ana M.
;
Mazali, I. O.
;
Sigoli, Fernando A.
Número total de Autores: 6
|
| Tipo de documento: | Artigo Científico |
| Fonte: | JOURNAL OF MATERIALS CHEMISTRY C; v. 13, n. 7, p. 11-pg., 2024-12-16. |
| Resumo | |
Temperature measurements are crucial in numerous industries, spurring ongoing innovations in sensing technology. Among the myriad techniques being explored, luminescence thermometry using lanthanide(iii) (Lniii) coordination polymers has garnered considerable interest. However, there remains a scarcity of mapping design strategies for optimizing luminescent temperature probes. To address this issue, theoretical models that examine photophysical dynamics can offer valuable insights into the thermal response of luminescence. In this work, we show a detailed study that integrates theoretical modelling with experimental analysis of the thermal dependence of luminescence in two coordination polymers: [Ln(tfa)3(mu-dppeo)]n (1) and [Ln(tfa)3(mu-dppbo)]n (2) (Ln = Eu and Tb, tfa- = trifluoroacetylacetonate, and the bridge ligands are [(diphenylphosphoryl)R](diphenyl)phosphine oxide, R = ethyl - dppeo - or butyl - dppbo). By combining experimental and theoretical methods, the mechanisms governing intramolecular and intermolecular energy transfer are investigated. The thermal behaviours of ligand-to-LnIII and LnIII-to-LnIII energy transfer processes are dissected upon direct ligand or TbIII excitation, shedding light on their contributions to luminescence thermometry and enabling control of the thermal response. Additionally, we adapted and experimentally validated a theoretical protocol for mapping temperature sensing based on the population dynamics of emitting states, demonstrating its feasibility for designing molecular thermometers with enhanced sensitivity. Overall, this study sets the stage for unfolding thermal response mechanisms across multiple excitation channels, offering a foundation for the development of luminescent temperature probes. (AU) | |
| Processo FAPESP: | 23/05718-9 - Filmes luminescentes multifuncionais baseados em down-shifting e up-conversion para aplicação em anti-falsificação e micro-LEDs recobertos para tecnologia de displays |
| Beneficiário: | Leonardo Figueiredo Saraiva |
| Modalidade de apoio: | Bolsas no Brasil - Doutorado Direto |
| Processo FAPESP: | 21/08111-2 - Materiais conversores de luz à base de terras raras: marcadores luminescentes, sensores e amplificadores ópticos |
| Beneficiário: | Hermi Felinto de Brito |
| Modalidade de apoio: | Auxílio à Pesquisa - Temático |
| Processo FAPESP: | 20/02614-0 - Silicatos emissores de luz branca dopados com lantanídeos e metais de transição para aplicação em diodos emissores de luz branca quente |
| Beneficiário: | Marian Rosaly Davolos |
| Modalidade de apoio: | Auxílio à Pesquisa - Regular |
| Processo FAPESP: | 14/50906-9 - INCT 2014: em Materiais Complexos Funcionais (INOMAT) |
| Beneficiário: | Fernando Galembeck |
| Modalidade de apoio: | Auxílio à Pesquisa - Temático |
| Processo FAPESP: | 21/06326-1 - Luminescência de íons lantanídeos: uma ferramenta óptica contra falsificações |
| Beneficiário: | Fernando Aparecido Sigoli |
| Modalidade de apoio: | Auxílio à Pesquisa - Regular |