Patent ID: 6512083
Filing Date: 2003-01-28
Classification: C07C,C08G,C09B,C09K,H01L,Y10S

Abstract:
A composition containing polymers which have at least ten groups of the formula: and a polydispersity of less than 5, wherein R1 is independently in each occurrence C1-20 hydrocarbyl or C1-20 hydrocarbyl containing one or more S, N, O, P or Si atoms, C4-16 hydrocarbyl carbonyloxy, C4-16 aryl(trialkylsiloxy) or both R1 may form with the 9-carbon on the fluorene ring a C5-20 ring structure or a C4-20 ring structure containing one or more heteroatoms of S, N or O; R2 is independently in each occurrence C1-20 hydrocarbyl, C1-20 hydrocarbyloxy, C1-20 thioether, C1-20 hydrocarbylcarbonyloxy or cyano; and a is independently in each occurrence, 0 or 1, wherein substantially all the polyfluorene groups (IV) are connected through the 2 and 7 carbon atoms and wherein, in addition to the groups of formula IV, the polymer includes at least one other conjugated monomer group.