Robust and highly emissive copper(i) halide 1D-coordination polymers with triphenylarsine and a series of bridging N-heteroaromatic co-ligands

Abstract

Various 1D-coordination polymers with dinuclear rhombic {Cu₂X₂} cores (X = Br, I) were synthesized using a spontaneous evaporation method employing triphenylarsine (AsPh₃) and six types of bidentate N-heteroaromatic co-ligands. The coordination polymers exhibited intense emission even at 298 K (quantum yield: up to 0.60), and their emission color was dependent on the N-heteroaromatic co-ligand. The emission efficiencies of these coordination polymers were higher than those of the discrete complexes with AsPh₃ and monodentate N-heteroaromatic co-ligands reported in our previous work. In addition, the luminescence of these coordination polymers was more resistant to mechanical stimuli than that of the discrete ones.