Patent ID: 8129037
Filing Date: 2012-03-06
Classification: C09K,H01L,Y02E,Y02P,Y10S

Abstract:
1. A compound of the formula (1) wherein the symbols and indices are defined as follows: R R R X is the same or different at each instance and is —CR Y is the same or different at each instance and is an aromatic or heteroaromatic ring system which has 5 to 60 aromatic ring atoms and is optionally substituted by one or more R R n is the same or different at each instance and is 0 or 1; m is the same or different at each instance and is 0, 1, 2, 3 or 4, with the proviso that at least one index m is not equal to 0, and with the further proviso that neither index m is equal to 0 if both n=0; with the proviso that at least two of the substituents R