Four new bis() unimers with different linkers between the thieno[3,2-]thiophene-2,5-diyl central unit and terpyridine-4'-yl () end-groups: no linker (), ethynediyl (), 1,4-phenylene () and 2,2'-bithophene-5,5'-diyl () are prepared, characterized, and assembled with Fe ions to metallo-supramolecular polymers (Fe-MSPs). The Fe-MSP films prepared by spin-casting on Indium Tin Oxide (ITO) glass are characterized by atomic force microscope (AFM) microscopy, cyclic voltammetry, and UV/vis spectroscopy and studied for their electrochromism and effect of the unimer structure on their electrochromic performance. Of the studied MSPs, shows the highest optical contrast as well as coloration efficiency (CE = 641 cm C) and the fastest optical response. This makes it an excellent candidate for possible use in electrochromic devices.
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| http://dx.doi.org/10.3390/polym13030362 | DOI Listing |
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