| abstract |
1. The compound of formula (1), where the following applies to the symbols used: Υ in each case, equally or differently, CR or Ν; X is selected from C (R), O, S, PR, P (= O) R or BR; R, R in each case represents, equally or differently, H, D, F, Cl, Br, I, N (R), N (Ar), C (= O) Ar, P (= O) Ar , S (= O) Ar, S (= O) Ar, CR = CRAr, CN, NO, Si (R), B (OR), OSOR, unbranched alkyl, an alkoxy or thioalkoxy group containing from 1 to 40 C atoms or branched or cyclic alkyl, an alkoxy or thioalkoxy group containing from 3 to 40 C atoms, each of which may be substituted by one or more radicals R, where one or more CH groups that are not adjacent can be replaced by RC = CR, C≡C, Si (R), C = O, C = NR, P (= O) (R), SO, SO , NR, O, S or CONR, and where one or more Η atoms can be replaced by D, F, Cl, Br, I, CN or Ν O, or an aromatic or heteroaromatic ring system containing from 5 to 60 atoms of the aromatic ring, which may in each case be substituted by one or more R radicals, or an aryloxy or heteroaryloxy group containing from 5 to 40 aromatic ring atoms, which may be substituted by one or more R radicals, or a group y aralkyl or heteroaralkyl having 5 to 40 aromatic ring atoms, which may be substituted by one or more radicals R, or a combination of these systems; two or more R substituents in this case, together with the atoms to which they are bonded, or two R substituents, together with the atom to which they are bonded, can also form a mono- or polycyclic, aliphatic or aromatic ring system with each other; Ar in each case represents, equally or differently, an aromatic or heteroaromatic ring |