Substituent and heteroatom effects on the electrochromic properties of similar systems |
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| Authors: | Merve İçli‐Özkut Jetmire Mersini Ahmet M. Önal Atilla Cihaner |
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| Affiliation: | 1. Department of Chemistry, Middle East Technical University, TR‐06531 Ankara, Turkey;2. Department of Chemistry, Yüzüncü Y?l University, 65080 Van, Turkey;3. Department of Chemical Engineering and Applied Chemistry, Atilim Optoelectronic Materials and Solar Energy Laboratory (ATOMSEL), Atilim University, TR‐06836 Ankara, Turkey |
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| Abstract: | Electrochromic polymers called poly(3,4‐dihydro‐3,3‐bis ((naphthalen‐1‐yl)methyl)‐2H‐thieno[3,4‐b][1,4]dioxepine) (PProDOT‐Np2), poly(3,3‐dibenzyl‐3,4‐dihydro‐2H‐selenopheno[3,4‐b][1,4]dioxepine), and poly(3,3‐dibenzyl‐3,4‐dihydro‐2H‐thieno[3,4‐b][1,4]dioxepine) were synthesized electrochemically and the effect of substituents and heteroatoms on the electrochromic properties were investigated for the similar systems. All polymers show electrochromism from a colored state when neutralized to transmissive when oxidized. Although, increasing bulky size (PProDOT‐Np2) causes lower coloration efficiency (CE) as well as lower optical contrast, the replacement of S atom by Se atom resulted in a lower band gap polymer with a higher CE than its thiophene analog. © 2011 Wiley Periodicals, Inc. J Polym Sci Part A: Polym Chem, 2012 |
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| Keywords: | conducting polymers conjugated polymers electrochemistry electrochromism polyselenophenes 3,4‐propylenedioxyselenophenes ProDOS redox polymers |
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