Journal
CHEMISTRY OF MATERIALS
Volume 15, Issue 26, Pages 4923-4929Publisher
AMER CHEMICAL SOC
DOI: 10.1021/cm034115o
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A new low band gap polymer, poly(1,3-bis(2'-[3',4'-ethylenedioxylthienyl)-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.
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