Estimating the Donor-Acceptor Distance To Tune the Emission Efficiency of Luminescent Lanthanide Compounds

Autor(es)

Monteiro, Jorge H. S. K. ; de Bettencourt-Dias, Ana ; Sigoli, Fernando A.

• Tipo de documento: Artigo Científico
• Fonte: Inorganic Chemistry; v. 56, n. 2, p. 709-712, JAN 16 2017.
• Citações Web of Science: 16

Resumo

The influence of the donor-acceptor distance R-L on the photophysical properties, including the emission quantum yield, of two europium complexes with the same coordination number, and thus similar microsymmetries, was investigated by spectroscopic and computational methods. K-3{[}Eu(dipicCbz)(3)] was synthesized using the new ligand dipicCbz and its photophysical properties compared to Cs-3{[}Eu(dipic)(3)]. We found that a 50% increase in R-L from 4.1 to 6.5 angstrom results in a substantial decrease in the emission efficiency from 24 to 1.8%. (AU)

• Processo FAPESP: 13/22127-2 - Desenvolvimento de novos materiais estratégicos para dispositivos analíticos integrados
• Beneficiário: Lauro Tatsuo Kubota
• Modalidade de apoio: Auxílio à Pesquisa - Temático