title: Unusual photoluminescence properties of the 3D mixed-lanthanide-organic frameworks induced by dimeric structures: a theoretical and experimental approach.
abstract: The present work describes a complementary experimental and theoretical investigation of the spectroscopic properties of the four isostructural 3D Ln-MOFs (wherein PDC = pyrazole-3,5-dicarboxylate, [La2(PDC)3(H2O)4]·2H2O (1), [(La0.9Eu0.1)2(PDC)3(H2O)4]·2H2O (2), [(La0.9Tb0.1)2(PDC)3(H2O)4]·2H2O (3) and [(La0.9Eu0.5Tb0.5)2(PDC)3(H2O)4]·2H2O (4)). The experimental data and theoretical calculations show that the singular photophysical properties presented by these Ln-MOFs are induced by strong interaction between the Ln(3+) ions.
authors.affiliation: LIMA-Laboratório de Inorgânica e Materiais, Instituto de Química, Campus Universitário Darcy Ribeiro, CEP 70904970, P.O. Box 4478, Brasilia-DF, Brazil. marcelozohio@unb.br.
authors.forename: Carime V
authors.initials: CV
authors.lastname: Rodrigues
authors.forename: Leonis L
authors.initials: LL
authors.lastname: Luz
authors.forename: José Diogo L
authors.initials: JD
authors.lastname: Dutra
authors.forename: Severino A
authors.initials: SA
authors.lastname: Junior
authors.forename: Oscar L
authors.initials: OL
authors.lastname: Malta
authors.forename: Claudia C
authors.initials: CC
authors.lastname: Gatto
authors.forename: Huayna C
authors.initials: HC
authors.lastname: Streit
authors.forename: Ricardo O
authors.initials: RO
authors.lastname: Freire
authors.forename: Claudia
authors.initials: C
authors.lastname: Wickleder
authors.forename: Marcelo Oliveira
authors.initials: MO
authors.lastname: Rodrigues