trans-Bis(3,4-ethylenedioxythiophene)vinylene is synthesized and electrochemically polymerized to give poly[trans-bis(3,4-ethylenedioxythiophene)vinylene](PBEDOT-V) which exhibits a band gap of 1.4 eV and can be rapidly switched between insulating deep purple absorptive and highly conducting light blue transmissive states.
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Sotzing et al. (1995) studied this question.