Monocapped conductive polymers with alkenyl or alkynyl end groups and block copolymers therefrom

摘要

Novel polymer compositions which provide controlled end-group functionalization for polythiophenes including regioregular polythiophenes including alkenyl and alkynyl functionalization. Monocapped polymers are formed and can be converted to block copolymers. Conditions and reagents can be selected to provide more monocapping than dicapping of the polymer. Devices, films, and blends can be prepared.

主权项

1. A one-pot method of making a poly(3-substituted thiophene) which is at least 70% monocapped with alkenyl or alkynyl end group comprising (i) preparing a poly(3-substituted thiophene) precursor to form a polymer reaction mixture; and (ii) reacting the precursor in the polymer reaction mixture with an alkenyl or alkynyl Grignard reagent to form in one pot the poly(3-substituted thiophene which is at least 70% monocapped with alkenyl or alkynyl end group, wherein the alkenyl or alkynyl end group comprises from two to five carbon atoms, and wherein the poly(3-substituted thiophene) which is at least 70% monocapped with alkenyl or alkynyl end group is also 20 percent or less dicapped.