New Charge Transfer–Type π‐Conjugated Poly(aryleneethynylene) Containing Benzo[2,1,3]thiadiazole as the Electron‐Accepting Unit

A new charge-transfer polymer, containing a benzo[2,1,3]thiadiazole electron-accepting group and a 2,5-dihexyloxy-1,4-phenylene electron-donating group, has been synthesized via Pd-complex-catalyzed polycondensation. The polymer has a π-stacked structure in the solid state and forms spherulites. In addition, thin films of the polymer have a golden metallic luster (see Figure).