Patent ID: 9698348
Date: 2017-07-04
CPC Classifications: C07D,C08G,C09B,H01L,Y02E

Claim:
1. A polymer, comprising one or more (repeating) unit(s) of formula wherein Y is of formula a is 0, 1, 2, or 3, a′ is 0, 1, 2, or 3; b is 0, 1, 2, or 3; b′ is 0, 1, 2, or 3; c is 0, 1, 2, or 3; and c′ is 0, 1, 2, or 3; Ar and Ar′ denote a homo- or heteroaromatic system, which may be substituted, or unsubstituted; R a C a C a C a C a C a C2-C20heteroaryl group which can optionally be substituted one or more times with C1-C a —CO—C  such as, for example, wherein X is —O—, —S—, —NR wherein X R R R R R R R R R R R wherein R R D is —CO—, —COO—, —S—, —O—, or —NR E is C G is E, or C1-C18alkyl, and R R R R R R