Some embodiments provide a compound represented by Formula 1:
wherein R1, R2, R3, R4, R5, R6, R7 and R8 are independently H, C1-C3 alkyl, or C1-3 perfluoroalkyl; HT is optionally substituted carbazoyl, optionally substituted phenylcarbazolyl, optionally substituted (phenylcarbazolyl)phenyl, optionally substituted phenylnaphthylamine, or optionally substituted diphenylamine; and ET optionally substituted benzimidazol-2-yl, optionally substituted benzothiazol-2-yl, optionally substituted benzoxazol-2-yl, optionally substituted 3,3′-bipyridin-5-yl, optionally substituted quinolin-8-yl, optionally substituted quinolin-5-yl, or optionally substituted quinoxalin-5-yl. Other embodiments provide an organic light-emitting diode device comprising a compound of Formula 1.
Abstract Two novelcationic Ir(III) complexes, [(nbt)2Ir(L)](PF6) and [(CF3-bt)2Ir(L)](PF6), where nbt = 2-(1-naphthyl)benzothiazole; CF3-bt = 2-phenyl-6-(trifluoromethyl)-benzothiazole and L = 1-(4-(tert-butyl)phenyl)-2-(5-(9-(p-tolyl)-9H-carbazol-3-yl)pyridin-2-yl)-1H-phenanthro [9,10-d]imidazole, were successfully synthesized and characterized. The structures of L and [(nbt)2Ir(L)](PF6) were confirmed