Synthesis of Electron-Donating Polymer Having Vinylogous TTF in the Main Chain

The electron-donating polymer containing vinylogous TTF unit in the main chain was successfully obtained by oxidative polymerization of bisdithiafulvene (bisDTF) (1). The polymer was soluble in common organic solvents such as chloroform and toluene. Structural characterization of the polymer was provided by 1H and 13C NMR spectroscopies. The number-average molecular weight of the polymer was estimated as 5,400 by gel permeation chromatographic analysis (chloroform, polystyrene standards). Optical and electrochemical properties of the polymer were studied by UV-vis analysis and cyclic voltammetry. Charge transfer complex of the polymer with tetracyanoquinodimethane (TCNQ) was obtained in a DMSO solution.