Very Stable Low Band Gap Polymer for Charge Storage Purposes and Near-Infrared Applications

Autor:	Gursel Sonmez, Hong Meng, Fred Wudl
Rok vydání:	2003
Předmět:	Conductive polymer chemistry.chemical_classification Supercapacitor Materials science Band gap General Chemical Engineering Near-infrared spectroscopy Charge (physics) General Chemistry Polymer Electrochemistry chemistry Chemical engineering Polymer chemistry Materials Chemistry
Zdroj:	Chemistry of Materials. 15:4923-4929
ISSN:	1520-5002 0897-4756
DOI:	10.1021/cm034115o
Popis:	A new low band gap polymer, poly(1,3-bis(2‘-[3‘,4‘-ethylenedioxy]thienyl)-benzo[c]thiophene-N-2‘ ‘-ethylhexyl-4,5-dicarboximide) P(DEDOT-ITNIm), was synthesized. Electrochemically prepared polymer films were very stable to overoxidation upon p-doping and stable upon n-doping. The low band gap of the polymer films, 1.10 eV, was determined from electrochemistry and spectroelectrochemistry. Thin polymer films on ITO-coated glass slides showed exceptional optical properties upon both p- and n-doping, these were small changes in the transparency and color of the polymer in the visible region but more dramatic changes in the near-infrared region. The charge storage capacity of P(DEDOT-ITNIm) films is very high when compared to other members of the conducting polymers family, making this polymer a good candidate for charge storage purposes; e.g., as supercapacitors.
Databáze:	OpenAIRE
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