The “click” type cycloaddition/retroelectrocyclization reaction is an intriguing approach for synthesizing electron donor-acceptor organic polymers. This chapter covers the fundamental reaction mechanism and the basic principles of applying this reaction to the synthesis of organic polymers via postfunctionalization or step-growth polymerization. The electron donor-acceptor moieties can be incorporated into the main-chain and/or side-chain of both conjugated and nonconjugated polymers. These polymers feature attractive properties including intramolecular charge-transfer bands, nonlinear optical properties, redox activities, third-order nonlinear optical properties, and enhanced thermal stability. Because of this, these polymers have found a variety of applications such as colorimetric chemosensors of metal ions, nonlinear optics, and solar cells. This novel “click” chemistry paves a unique path toward the synthesis of next-generation functional materials that cannot be accomplished by the incumbent synthetic methods.
Part of the book: Organic Polymers