Iron (II) metallo-supramolecular polymers based on thieno[3,2-b]thiophene for electrochromic applications

0539572 - ÚMCH 2022 RIV CH eng J - Journal Article
Chernyshev, A. - Acharya, Udit - Pfleger, Jiří - Trhlíková, Olga - Zedník, J. - Vohlídal, J.
Iron (II) metallo-supramolecular polymers based on thieno[3,2-b]thiophene for electrochromic applications.
Polymers. Roč. 13, č. 3 (2021), č. článku 362. E-ISSN 2073-4360
R&D Projects: GA ČR(CZ) GA17-03984S
Institutional support: RVO:61389013
Keywords : electrochromism * field responsive polymer * metallo-supramolecular polymer
OECD category: Electrical and electronic engineering
Impact factor: 4.967, year: 2021
Method of publishing: Open access
https://www.mdpi.com/2073-4360/13/3/362

Four new bis(tpy) unimers with different linkers between the thieno[3,2-b]thiophene-2,5-diyl central unit and terpyridine-4′-yl (tpy) end-groups: no linker (Tt), ethynediyl (TtE), 1,4-phenylene (TtPh) and 2,2′-bithophene-5,5′-diyl (TtB) are prepared, characterized, and assembled with Fe2+ 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, Fe-Tt shows the highest optical contrast as well as coloration efficiency (CE = 641 cm2 C−1) and the fastest optical response. This makes it an excellent candidate for possible use in electrochromic devices.
Permanent Link: http://hdl.handle.net/11104/0317285