Patent ID: 8901298
Filing Date: 2014-12-02
Classification: C09K,H01L,H05B,Y02E,Y10S

Abstract:
1. A compound of the formula (1), (2), (3), (4) or (5): wherein X is in each case, independently of one another, a divalent bridge selected from B(R X Y is in each case, independently of one another, CR or N; R is in each case, independently of one another, H, D, F, Cl, Br, I, N(R is in each case, independently of one another, D, F, Cl, Br, I, CN, NO R Ar is in each case, independently of one another, an aromatic or heteroaromatic ring system having 5 to 40 aromatic ring atoms, which is optionally substituted by one or more non-aromatic radicals R and where the following two compounds are not covered by the claim: