Synthesis and luminescence of poly(phenylacetylene)s with pendant iridium complexes and carbazole groups

Poly(phenylacetylene)s containing pendant phosphorescent iridium complexes have been synthesized and their electrochemical, photo- and electroluminescent properties studied. The polymers have been synthesized by rhodium-catalyzed copolymerization of 9-(4-ethynylphenyl)carbazole (CzPA) and phenylacetylenes (C∧N)2Ir(κ2-O,O′-MeC(O)CHC(O)C6H4CCH-4) (C∧N = κ2-N,C1-2-(pyridin-2-yl)phenyl (IrppyPA) or κ2-N,C1-2-(isoquinolin-1-yl)phenyl (IrpiqPA)). In addition, organic poly(phenylacetylene)s with pendant carbazole groups have been synthesized by rhodium-catalyzed copolymerization of CzPA and 1-ethynyl-4-pentylbenzene. Complex (C∧N)2Ir(κ2-O,O′-MeC(O)CHC(O)Ph) (IrpiqPh; C∧N = 2-(isoquinolin-1-yl)phen…