Patent ID: 7374702

Claim:
An n-type polythiophene composition having the structural formula wherein R 1 , R 2 and R 3 are substituents selected from fluoroalkyl moieties, C n H 2n+1 and wherein a ranges from 1 to about 12, H, F, and (CH 2 ) a X and where a ranges from 1-about 12 and X is selected from amino, hydroxy and carboxylic acid functionalities; x is an integer selected from the group of integers consisting of 1 and integers greater than 1; y is an integer selected from the group of integers consisting of 0 and integers greater than 0 and A, B, W and Z are moieties selected from N and CH; and z is an integer selected from the group of integers consisting of 0 and integers greater than 0, providing said composition comprises at least one said non-thiophenyl component, and y is ≧1 where A, B, W and Z are CH and z is 0.