Click Functionalization of Aromatic Polymers for Organic Electronic Device Applications

The [2 + 2] cycloaddition–retroelectrocyclization between electron‐rich alkynes and tetracyanoethylene (TCNE)/7,7,8,8‐tetracyanoquinodimethane (TCNQ), yielding the tetracyanated donor–acceptor (D–A) chromophores, is a new class of click chemistry reactions, due to the high efficiencies, no byproducts, and applicability to polymer syntheses. As compared to the conventional click reactions represented by the Cu(I)‐catalyzed azide–alkyne...