Efficiently luminescent copper(i) iodide complexes with crystallization-induced emission enhancement (CIEE)

Abstract

Luminescent Cu(I) iodide complexes featuring simple neutral diimine and phosphine ligands were prepared. The emission intensity of these complexes was significantly enhanced by crystallization. Intermolecular π–π interactions between the adjacent diimine ligands should be responsible for the crystallization-induced emission enhancement (CIEE) behaviors through consolidating the structural rigidity of these complexes.