| abstract |
A complex represented by Formula I: n nwherein:n 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 of 0 to 4, as limited by valence; X represents O, S, NR 1a , SiR 1b R 1c , or CR 1d R 1e , where each of R 1a , R 1b , R 1c , R 1d , and R 1e independently represents substituted or unsubstituted C 1 -C 4 alkyl; Y 1a , Y 2a , Y 3b , and Y 4a each independently represents N or C; Y 3a represents N, CR 2a , or SiR 2b , where R 2a and R 2b represent hydrogen or substituted or unsubstituted C 1 -C 4 alkyl, aryl, or heterocyclic aryl; Y 5a and Y 5b each independently represents C or N; and Y 5c , Y 5d , and Y 5e each independently represents C, N, O, or S. nn Light emitting devices for full color displays may include a complex represented by Formula I. |