Patent ID: 7211643
Filing Date: 2007-05-01
Classification: C08F,C08G,C09K,H01L,H05B,Y02E,Y10T

Abstract:
1. A copolymer consisting essentially of at least one first monomeric unit and at least one second monomeric unit, wherein the at least one first monomeric unit has a Formulae I and I(a) and the at least one second monomeric unit is selected from aromatic groups having Formula V where: in each of Formulae I, I(a) and V: R is a substituent on a carbon atom which can be the same or different at each occurrence and is selected from hydrogen, alkyl, aryl, heteroalkyl, heteroaryl, F, —CN, —OR or in Formula V: E can be the same or different at each occurrence and is a single bond or a linking group selected from arylene and heteroarylene; Q W is H, alkyl or heteroalkyl; or both of W together can represent one single bond.