Patent ID: 8193528

Claim:
An electronic device, comprising a compound of formula wherein Y 1 , Y 2 , Y 3 , Y 4 , X 1 , X 2 and X 3 are independently each other N, or CR 4 , with the proviso that at least one of the groups X 1 , X 2 and X 3 is a group CR 4 , R 1 is hydrogen, F, —SiR 100 R 101 R 102 , or an organic substituent, R 1′ and R 4 are independently of each other hydrogen, F, —SiR 100 R 101 R 102 , or an organic substituent, or any of the substituents R 1 , R 1′ and R 4 , which are adjacent to each other, together form an aromatic, or heteroaromatic ring, or ring system, which can optionally be substituted, m is an integer of 1 to 6, and R 100 , R 101 and R 102 are independently of each other a C 1 -C 8 alkyl group, a C 6 -C 24 aryl group, or a C 7 -C 12 aralkylgroup, which may optionally be substituted, and Q is a linking group; with the proviso that in the compound of formula III at least one of the substituents R 1′ , or R 4 is a group Q.