POLY 144 |
| A new highly stable low band gap polymer, poly-4,7-dithien-2-yl-2,1,3-benzothiadiazole, was electrochemically synthesized, and its electrochemical, electrochromic, morphological properties are reported. The oxidation potential of the monomer was relatively low: 0.9 V vs. Ag/Ag+, and the E1/2 of the polymer was 0.65 V vs. Ag/Ag+. Electrochemically prepared polymer films were very stable upon reusage and against long-term switching up to 1000 cycles, moreover open circuit experiments showed that the material has a good memory effect. The low band gap of the polymer films, 1.10 eV, was determined from electrochemistry. 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, making this polymer a good candidate for solar cells and near-infrared applications. |
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General Papers: Synthesis and Characterization
6:00 PM-8:00 PM, Sunday, 10 September 2006 Moscone Center -- Hall D, Poster
Division of Polymer Chemistry |