title: Estimating the Donor-Acceptor Distance To Tune the Emission Efficiency of Luminescent Lanthanide Compounds.
abstract: The influence of the donor-acceptor distance RLon 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. K3[Eu(dipicCbz)3] was synthesized using the new ligand dipicCbz and its photophysical properties compared to Cs3[Eu(dipic)3]. We found that a 50% increase in RLfrom 4.1 to 6.5 Å results in a substantial decrease in the emission efficiency from 24 to 1.8%.
authors.affiliation: Institute of Chemistry, University of Campinas , Campinas, São Paulo, Brazil.|Department of Chemistry, University of Nevada , Reno, Nevada 89557, United States.
authors.forename: Jorge H S K
authors.initials: JH
authors.lastname: Monteiro
authors.affiliation: Department of Chemistry, University of Nevada , Reno, Nevada 89557, United States.
authors.forename: Ana
authors.identifier: http://orcid.org/0000-0001-5162-2393
authors.initials: A
authors.lastname: de Bettencourt-Dias
authors.affiliation: Institute of Chemistry, University of Campinas , Campinas, São Paulo, Brazil.
authors.forename: Fernando A
authors.initials: FA
authors.lastname: Sigoli