Synthesis and Characterization of Dithienothiophene, Bithiazole and Thiophene Containing Polymer. (10th February 2017)

• Record Type: Journal Article
• Authors: Ustamehmetoğlu, B.; Osken, I.; Cinar, M.E.; Sezer, E.; Karaca, E.; Ozturk, T.
• Is Part Of: Electrochimica acta. Volume 227(2017)
• Page Start: 435
• Page End: 446
• Publication Date: 2017-02-10
• Subjects: 4, 4'-Dinonyl-2, 2'-bithiazole and 3, 5-diphenyldithieno[3, 2-b;2′, 3′-d]thiophene -- Stille cross coupling reaction -- Electropolymerization -- DFT; Electrochemistry -- Periodicals; Electrochemistry, Industrial -- Periodicals; 541.37
• DOI: 10.1016/j.electacta.2016.12.153
• Languages: English
• ISSNs: 0013-4686

Abstract

Abstract: Synthesis of comonomer, possessing 4, 4'-dinonyl-2, 2'-bithiazole and 3, 5-diphenyldithieno[3, 2- b ;2′, 3′- d ]thiophene(T-NBT-Ph2 DTT-NBT-T) units, was achieved using Stille cross coupling reaction. Its electropolymerization was conducted in acetonitrile, containing 0.1 M NaClO4 + 0.1 M LiCIO4 (MCIO4 ). Properties of the polymer film, obtainedP[T-NBT-Ph2 DTT-NBT-T], were characterized by electrochemical techniques. Effect of the polymerization charge on the redox behavior of the polymer film was investigated, and the film was further characterized by UV-visible spectrophotometric measurements. Corresponding electrical equivalent circuit was applied to the experimental electrochemical impedance spectroscopy (EIS) data to explain the parameters of each element and the interface of thePt/P[T-NBT-Ph2 DTT-NBT-T]/MCIO4 system. The band gap of the polymer was obtained as 1.86 eV by in situ spectroelectrochemical measurements. Good stability in the oxidized state was verified experimentally. Molecular orbitals and electropolymerization of the comonomer were investigated at DFT level.