Patent ID: 8628862
Filing Date: 2014-01-14
Classification: C07C,C07D,C09K,H01L,H05B,Y02E,Y02P

Abstract:
1. An electroluminescent (EL) device, comprising a compound of the formula selected from the group consisting of wherein m can be the same or different at each occurrence and is 0, 1, 2, or 3, R and R or R wherein R 7 , R 8 and R 9 are independently of each other H, C 1 -C 18 alkyl, C 1 -C 18 alkoxy, or C 1 -C 18 alkyl which is interrupted by O, R R -L -NA wherein A or A 1 and A 1′ , or A 3 and A 3′ together with the nitrogen atom to which they are bonded form a heteroaromatic ring, or ring system, selected from the group consisting of wherein m′ is 0, 1, or 2; m1 can be the same or different at each occurence and is 0, 1, 2, 3, or 4; R substituents R R R R R R BU is wherein R 41 can be the same or different at each occurrence and is Cl, F, CN, NR 45 R 45′ , a C 1 -C 25 alkyl group, a C 4 -C 18 cycloalkyl group, a C 1 -C 25 alkoxy group, in which one or more carbon atoms which are not adjacent to each other could be replaced by —NR 45 —, —O—, —S—, —C(═O)—O—, or —O—C(═O)—O—, and/or wherein one or more hydrogen atoms can be replaced by F, a C 6 -C 24 aryl group, or a C 6 -C 24 aryloxy group, wherein one or more carbon atoms can be replaced by O, S, or N, and/or which can be substituted by one or more non-aromatic groups R 41 , or two or more groups R R R wherein R D is —CO—, —COO—, —S—, —SO—, —SO E is −OR G is E, or C wherein R