Patent ID: 8921506
Filing Date: 2014-12-30
Classification: C08G,H01L,Y02E

Abstract:
1. A copolymer comprising a first unit represented by the formula 1 and at least two units different from the first unit, wherein the two units different from the first unit include at least one electron acceptor and at least one electron donor, the electron donor is represented by the following formula 4, the first unit is present in an amount of greater than 0 mole % and 45 mole % or less based on the total moles of monomers constituting the copolymer, and the electron acceptor is substituted with a substituted or unsubstituted alkoxy group having 1 to 40 carbon atoms: wherein o and p are each an integer ranging from 0 to 3; R R wherein q and r are each an integer ranging from 0 to 3; R R″ is selected from the group consisting of hydrogen, deuterium, a halogen group, a nitrile group, a nitro group, an imide group, an amide group, a hydroxyl group, a substituted or unsubstituted alkyl group, a substituted or unsubstituted cycloalkyl group, a substituted or unsubstituted alkoxy group, a substituted or unsubstituted aryloxy group, a substituted or unsubstituted alkylthioxy group, a substituted or unsubstituted arylthioxy group, a substituted or unsubstituted alkylsulfoxy group, a substituted or unsubstituted arylsulfoxy group, a substituted or unsubstituted alkenyl group, a substituted or unsubstituted silyl group, a substituted or unsubstituted boron group, a substituted or unsubstituted alkylamine group, a substituted or unsubstituted aralkylamine group, a substituted or unsubstituted arylamine group, a substituted or unsubstituted heteroarylamine group, a substituted or unsubstituted aryl group, a substituted or unsubstituted fluorenyl group, a substituted or unsubstituted carbazole group, and a substituted or unsubstituted heterocyclic group containing at least one heteroatom selected from among N, O and S.