Effects of alkyl groups in diphosphine dioxide-ligand for Eu(III)-beta-diketonate complexes on photoluminescence properties

摘要

Slight difference of molecular substructures of diphosphine dioxide-ligands has significant effects on properties of Eu(III) complexes. Half width of D-5(0) -> F-7(2) transition, life time, and quantum yield of Eu(III) complex 1 with i-propyl group substituted diphosphine dioxide are quite different from those of Eu(III) complexes 2 and 3 with n-butyl group substituted diphosphine dioxide-ligands. Smaller half width and Ratio R in solid state of complex 1 indicate that complex 1 has higher symmetry than others.