Rare observation of ‘aggregation induced emission’ in cyclometalated platinum(ii) complexes and their biological activities

Abstract

Three strong solid state emissive cyclometalated platinum(ii) complexes [Pt(C^N) (CH^N) (Cl)] (1) (C^N/CH^N = 2-phenylpyridine, C^N = bidentate and CH^N = monodentate), [Pt(C^N) (P^P)]Cl [P^P = bis(diphenylphosphino)ethane (2) and cis-1,2-bis(diphenylphosphino)ethene (3)] were reported. These were identified as 'Aggregation Induced Emission (AIE)' active complexes based on controlled experiments. Cytotoxicity and cell imaging have been studied for the complex 2.