Facile electrosynthesis and thermoelectric performance of electroactive free-standing polythieno(3,2-b)thiophene films

摘要: Polythieno[3,2-b]thiophene (PTT) was electrosynthesized by facile anodic oxidation of thieno[3,2-b]thiophene (TT) in three systems: boron trifluoride diethyl etherate (BFEE), acetonitrile (ACN), and dichloromethane solutions. The onset potential TT BFEE determined to be 0.62 V vs. Ag/AgCl, which much lower than those ACN PTT films exhibited excellent electrochemical property, high thermal stability, good redox activity, stability. Free-standing with mechanical property can obtained from solution, whose structure morphology were characterized FT-IR, UV–visible spectra, scanning electron microscopy. With an electrical conductivity 1.5 S cm−1 a Seebeck coefficient 85 µV K−1 at 306 K, the as-prepared free-standing showed certain thermoelectric property. dimensionless figure-of-merit estimated 2.3 × 10−3 higher some organic materials reported previously. All these results indicated that may have applications field.