Patent ID: 6869696

Claim:
An electro-luminescent device, comprising a hole transport layer and a luminescent layer between two conductive electrodes, wherein the luminescent layer comprises, as a luminescent compound or doping agent for a luminescent compound, at least one compound of formula I: wherein R 1 , R 2 , R 3 , R 4 , and R 8 are identical or different and are hydrogen, straight chain or branched C 1 -C 6 -alkyl, aralkyl, aryl, substituted aryl, or halogen; R 5 is hydrogen, OR 9 , N,N-di-(C 1 -C 6 )alkylamino, acetylamino, straight chain or branched C 1 -C 6 alkyl, aralkyl, aryl, substituted aryl, or halogen; or one or more of substituent pairs R 1 /R 2 , R 3 /R 4 , R 4 /R 5 , and R 5 /R 8 link together to form a 5 or 6 member alicyclic, heterocyclic, or aromatic ring; R 6 and R 7 are identical or different and are hydrogen, straight chain or branched C 1 -C 6 alkyl, aralkyl, aryl, or substituted aryl; or R 6 and R 7 link together to form a heterocyclic ring; A 1 and A 2 are identical or different and are —CN, —NO 2 , or —COOR 10 ; X is —CR 11 , or N; Y is O, —NR 12 , S, or Se; and R 9 to R 12 are identical or different and are hydrogen, straight chain or branched C 1 -C 6 alkyl, aralkyl, aryl, or substituted aryl; or one or more of substituent pairs R 5 /R 11 and R 4 /R 12 link together to form a 5 or 6 member alicyclic, heterocyclic, or aromatic ring.