Fluorescence Quenching in {Ln[Fe(CN)6]·<i>n</i>H2O}<i>x</i> (Ln = Eu(III) or Tb(III))

Abstract

Abstract Fluorescent properties of cyanide-bridged Ln(III)–Fe(III) complex assemblies, {Ln[Fe(CN)6]·nH2O}x (n = 4 for Ln = Eu; n = 5 for Ln = Tb), have been investigated in solid state in comparison with those of the 1 : 1 mixtures of K3[Fe(CN)6] and LnCl3·6H2O (Ln = Eu, Tb). Fluorescence of Eu(III) and Tb(III) is almost completely quenched in the complexes but little quenched in the mixtures.