Tetraethynylethene molecular scaffolding: Nonlinear optical, redox, and amphiphilic properties of donor functionalized polytriacetylene and expanded radialenes

Polymers with polytriacetylene (PTA) backbone (see the Figure), and also expanded radialenes (a new class of macrocycles with large conjugated all‐carbon cores), are of interest because of their intrinsic two‐dimensional π‐electron conjugated pathways. The synthesis, electrochemical characteristics, and linear and nonlinear optical properties of donor‐functionalized polytriacetylene and donor end‐capped expanded radialenes are reported and discussed. magnified image