An inorganic-organic hybrid material {[Dy2(SO4)(Himdc)2(H2O)5]-H2O}n featuring organic carboxylic acid and inorganic sulfate and luminescent property

摘要

Hydrotherma! treatment of a mixture of H3imdc (4,5-imidazoledicarboxylic acid), Na2SO4, Dy(NO3)3'6H2O and NaOH generated a novel inorganic-organic hybrid framework, {[Dy2(SO4)(Himdc)2(H2O)5]-H2O}n (1). Its crystal structure contains alternately arranged ID left-and right-handed helical {Dy(Himdc)}_n chains, each helical chain is composed of alternately arranged Dy(l) and Dy(2) ions connected by Himdc~(2-) with bis(bidentate) linking mode. Every three helical chains are bridged by inorganic SO4~(2-) anions, which link Dy~(3+) ions in a tris(monodentate) mode to form a 3D framework. Compound 1 displays intense yellow photoluminescence corresponding to the characteristic ~4F_(9/2) → ~6HJ transitions of the Dy~(3+) ion.