Synthesis, characterization, and photophysical properties of cyclometalated N-Heterocyclic carbene Platinum(II) complexes

Abstract Thiophene and benzothiophene ligands containing N -heterocyclic carbene (NHC) moieties were used to synthesize five and six-membered Pt(II) metallacycles. Ligand scaffolding was synthesized using two methods. The ligands were synthesized using a coupling reaction, utilizing Cu 2 O as the catalyst or were synthesized using a nucleophilic substitution reaction. The ligands were then metalated by chelate-assisted C H activation. The synthesis, characterization, reactivity, and photophysical properties of these NHC-functionalized, cyclometalated products are reported.