A series of four homoleptic cationic ZnII complexes (Zn1–Zn4) coordinated by two substituted bis-imidazo[1,2-a]pyridine (ImPy) ligands (L1–L4) is herein presented. The are functionalized with either electron acceptor or donor functional groups at the C6 positions ImPy moieties. In DMF solution, all display intense near-UV to blue emission (λem = 379–450 nm) high photoluminescence quantum yield ...