The present invention relates to polythiophenes, particularly regioregular head-to-tail
poly(3-alkylthiophenes) (HT-PATs), block copolymers made therefrom, and their methods
of formation. The present invention provides HT-PATs with well-defined, specific
end-groups, functionalization of the defined HT-PATs, and incorporation of end
group functionalized HT-PATs into block copolymers with structural polymers. The
intrinsically conductive diblock and triblock copolymers, formed from the HT-PATs,
have excellent conductivity and low polydispersities that are useful in a number
of applications. The block copolymers of the present invention have been found
to exhibit conductivities that range from a low of 10-8 S/cm for certain
applications to as high as several hundred S/cm or more.