| abstract |
The invention relates in particular to an electronic device, in particular an electroluminescent device, comprising a host for a phosphorescent emitter, an electron transporting substance or an azaporene of formula (I) or (III) (I) (III) In this formula, Y 1 , Y 2 , Y 3 , Y 4 , X 1 , X 2 and X 3 are independently of each other N or CR 4 , Provided that at least one of X 1 , X 2 and X 3 groups is a CR 4 group, R 1 is hydrogen, F, -SiR 100 R 101 R 102 or an organic substituent, R 4 is hydrogen, F, -SiR 100 R 101 R 102 or an organic substituent, or Any of the adjacent substituents R 1 , R 1 ' and R 4 together form an aromatic or heteroaromatic ring or ring system (which may optionally be substituted), m is an integer from 1 to 6, and R 100 , R 101 and R 102 are each independently a C 1 -C 8 alkyl group, a C 6 -C 24 aryl group or a C 7 -C 12 aralkyl group (which may be optionally substituted) and Q is a linking group, At least one of the substituents R 1 ' or R 4 in the compound is a Q group. The host may function with the phosphor to provide improved efficiency, stability, fabrication or spectroscopic characteristics of the electroluminescent device. |