Thiol-based post-modification of conjugated polymers
The present invention provides novel polymer compounds and methods and processes for polymerizing and synthesizing the new polymers by post-modifying conjugated polymers bearing unsaturated functionalities. The post-modifications are facilitated by light-mediated initiators, thermal initiators, redox-based initiators, small molecule-based initiators, or a combination thereof. Syntheses and post-modifications are carried out to high conversion via thiol-ene “click” chemistry-based mechanisms. The products comprise monomeric, oligomeric, and polymeric materials with easily-accessible pendant functionalities which impart new, distinct, and/or improved properties.
1. A method of synthesizing a functionalized (co)polymer made from at least one alkene or alkyne functionalized arene or heteroarene monomer, the method comprising a step of:
reacting a conjugated aromatic (co)polymer with at least one small molecule sulfur-containing or thiol-containing compound and a small-molecule initiator to form a functionalized (co)polymer comprising one or more repeating units selected from the group consisting of P1, P2, and P5:
wherein n is an integer>1.