Narrowband red phosphorescent tetradentate platinum(II) complexes

摘要

each Ar ¹ , Ar ² , Ar ³ , Ar ⁴ , and Ar ^{5 present} independently represents a substituted or unsubstituted aryl or heterocyclic aryl; each n is independently an integer from 0 to 4 limited by valency; X represents O, S, NR ^1a , SiR ^1b R ^1c , or CR ^1d R ^1e , wherein each of R ^1a , R ^1b , R ^1c , R ^1d , and R ^1e is independently substituted or unsubstituted C ₁ -C ₄ alkyl; Y ^1a , Y ^2a , Y ^3b , and Y ^4a each independently represent N or C; Y ^3a represents N, CR ^2a , or SiR ^2b , wherein R ^2aand R ^2b represents hydrogen or substituted or unsubstituted C ₁ -C ₄ alkyl, aryl, or heterocyclic aryl; Y ^5a and Y ^5b each independently represent C or N; A complex represented by the formula (I), wherein Y ^5c , Y ^5d , and Y ^{5e each independently represent C, N, O, or S.} A light emitting device for a full-color display may include a complex represented by the formula (I).