Abstract
A polybipyridilium species has been prepared with four diquaternised bipyridine moieties around a durene core; mixed halide (bromide with iodide or with chloride) as well as single-anion (chloride) salts were studied, and their electrochemistry investigated. Three reduction processes are inferred producing a pink (di-reduced) species, a purple (tetra-reduced) species and a beige-coloured fully-reduced product. Mixed anion effects, in conjunction with dimer association and comproportionation, led to more complicated anodic electrochemistry than when only chloride anions were involved.
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Rosseinsky, D.R., Monk, P.M.S. Studies of tetra-(bipyridilium) salts as possible polyelectrochromic materials. J Appl Electrochem 24, 1213–1221 (1994). https://doi.org/10.1007/BF00249884
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DOI: https://doi.org/10.1007/BF00249884