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)C6H4C≡CH-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)phenyl-　κ2-N,C1)　was　prepared　and　characterized.　While　the　copolymers　of　the　Irppyseries　were　weakly　phosphorescent,　those　of　the　Irpiqseries　displayed　at　room　temperature　intense　emissions　from　the　carbazole　(fluorescence)　and　iridium　(phosphorescence)　emitters,　being　the　latter　dominant　when　the　spectra　were　recorded　using　polymer　films.　Triple　layer　OLED　devices　employing　copolymers　of　the　Irpiqseries　or　the　model　complex　IrpiqPh　yielded　electroluminescence　with　an　emission　spectra　originating　from　the　iridium　complex　and　maximum　external　quantum　efficiencies　of　0.46%　and　2.99%,　respectively.　©　2010　Wiley　Periodicals,　Inc.