Patent ID: 8501948
Filing Date: 2013-08-06
Classification: C09B,C09K

Abstract:
1. A rylene-based polychromophore of the general formula I′ in which the variables are each defined as follows: X is a rylenedicarboximide radical of the formula Z is aryloxy, arylthio, hetaryloxy or hetarylthio, to each of which may be fused further saturated or unsaturated 5- to 7-membered rings whose carbon skeleton may be interrupted by one or more —O—, —S—, —NR B when n=1, 2 or 3: B′, when n=1, 2 or 3: A is a bridging member having at least one aromatic or heteroaromatic radical, where the Y or Y and Y Y is —O— or —S—; Y R is hydrogen; R R n is 1, 2 or 3; m is 0, 1 or 2; x, when n=1: z is from 0 to 8, where x+z≦8, and, when n=2 or 3: z≠0 when x=0; z1 when m=0: 0;