Patent ID: 8034882

Claim:
A conjugated or partially conjugated polymer comprising a structural unit of Formula III: wherein T is an aryl or heteroaryl group that may be substituted or unsubstituted, or a C1-C24 alkyl group; R 1 is alkyl, alkoxy, aryl group, cyano, or F; and a and b are independently selected from 1, 2 or 3, where Z is an aromatic group or a combination of two or more aromatic groups independently selected from the group of formulas: wherein the conjugated units may bear one or more substitutents, such substituents being independently, in each occurrence, C 1 - 20 hydrocarbyl, C 1 - 20 hydrocarboxyloxy, C 1 - 20 thioether, C 1 - 20 hydrocarbyloxycarbonyl, C 1 - 20 hydrocarboxycarbonyloxy, cyano, or fluoro group; X 1 is O or S; Q is R 2 or Ar; Ar is an aryl or heteroaryl group of C 4 to C 40 or substituted aryl or heteroaryl group of C 4 to C 40 ; R 2 is independently, in each occurrence, H, C 1 - 40 hydrocarbyl or C 3 - 40 hydrocarbyl containing one or more S, N, O, P or Si atoms , or both of R 2 together with the 9-carbon on the fluorene may form a C 5 - 20 ring structure that may contain one or more S, N, Si, P or O atoms; R 3 is independently, in each occurrence, C 1-20 hydrocarbyl, C 1-20 hydrocarbyloxy, C 1 - 20 thioether, C 1-20 hydrocarbyloxycarbonyl, C 1-20 hydrocarbylcarbonyloxy, cyano or fluoro group; R 4 is independently, in each occurrence, H, C 1-40 hydrocarbyl or C 3 - 40 hydrocarbyl containing one or more S, N, O, P or Si atoms, or both of R 4 together with the 9-carbon on the fluorene may form a C 5-20 ring structure that may contain one or more S, N, Si, P or O atoms; R 5 is independently, in each occurrence, H, C 1 - 40 hydrocarbyl or C 3 - 40 hydrocarbyl containing one or more S, N, O, P or Si atoms; n is independently in each occurrence, 0-3.