Patent ID: 7259229
Filing Date: 2007-08-21
Classification: C08G

Abstract:
1. A polymer comprising at least a first monomeric unit selected from (I) aromatic groups having a Formula I and at least one second monomeric unit selected from Formulae II through XI, (ii) aromatic groups having Formula II, (iii) 6-membered heteroaromatic groups having Formula III, (iv) 5-membered heteroaromatic groups having Formula IV, (v) aromatic groups having Formula V, (vi) divalent fused ring aromatic groups having Formula VI through Formula VIII, and Formula IX through Formula XI, and (vii) combinations thereof, where: in each of Formulae I, II, III, IV, V, VI, VII, VIII, and IX: R is a substituent on a carbon atom in an aromatic ring, which can be the same or different at each occurrence and is selected from H alkyl, aryl, heteroalkyl, heteroaryl, F, —CN, —OR and optionally, E can be the same or different at each occurrence and is a single bond or a linking group selected from arylene and heteroarylene; in Formula IV: A is independently at each occurrence C or N and γ is 0 or an integer selected from 1 or 2, such that when both A are N, then γ is 0; or when one of A is N and one of A is C, then γ is 1; or when both A are C, then γ is 2; Q is O, S, SO in Formula V: Q W is H, alkyl or heteroalkyl; or both of W together can represent one single bond; in Formula VI: the two E's are in the 1,4-, 1,5-, 1,8-, 2,3-, or 2,6-positions; in Formula VII: the two E's are in the 1,4-, 1,5-, 1,8-, 2,3-, 2,6-, or 9,10-positions; in Formula VIII: a first E is in the 1, 2, or 3 position, a second E is in the 6, 7, or 8 position; in Formula IX: a first E is in the 2, 3, or 4 position; a second E is in the 7, 8, or 9 position; and in Formula XII: R