Patent ID: 6916902
Filing Date: 2005-07-12
Classification: C08G,C09K,H01L,Y10S,Y10T

Abstract:
1. A composition comprising a polymer having a repeat unit of the formula: and additional optional repeat units of the formula wherein R 1 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 1 together with the 9-carbon on the fluorene may form a C 5-20 ring structure containing one or more S, N, or O atoms; R a is independently, in each occurrence 0 or 1; X is O, S, SO Ar is an aryl or heteroaryl group of C wherein the conjugated units may bear substituents, 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 hydrocarboxy carbonyloxy cyano, or fluoro group; X Q is R or Ar; R is C Ar is an aryl or heteroaryl group of C