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Donor-acceptor copolymers containing bithiophene and dithiophenylthienothiadiazole units with fast electrochromic response
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SYSNO ASEP 0506545 Document Type J - Journal Article R&D Document Type Journal Article Subsidiary J Článek ve WOS Title Donor-acceptor copolymers containing bithiophene and dithiophenylthienothiadiazole units with fast electrochromic response Author(s) Cimrová, Věra (UMCH-V) RID, ORCID
Výprachtický, Drahomír (UMCH-V) RID, ORCID
Pokorná, Veronika (UMCH-V) RIDSource Title Journal of Materials Chemistry C. - : Royal Society of Chemistry - ISSN 2050-7526
Roč. 7, č. 28 (2019), s. 8575-8584Number of pages 10 s. Language eng - English Country GB - United Kingdom Keywords low-bandgap thienothiadiazole copolymers ; synthesis ; photophysics Subject RIV CD - Macromolecular Chemistry OECD category Polymer science R&D Projects GC18-14683J GA ČR - Czech Science Foundation (CSF) Method of publishing Limited access Institutional support UMCH-V - RVO:61389013 UT WOS 000479006800011 EID SCOPUS 85069786220 DOI 10.1039/C9TC01105F Annotation New low-bandgap donor–acceptor (D–A) functional copolymers, CDTDBT and CEHTDBT, composed of a 3,3′-didodecyl-2,2′-bithiophene donor and 4,6-bis(3′-dodecylthiophen-2′-yl)thieno[3,4-c][1,2,5]thiadiazole (DT) or 4,6-bis(3′-(2-ethylhexyl)thiophen-2′-yl)thieno[3,4-c][1,2,5]thiadiazole (EHT) acceptor structural units, respectively, were synthesized by Stille coupling of the corresponding comonomers. The influence of decyls or branched 2-ethylhexyls chains attached to the thiophenes of the 4,6-bis(3′-alkylthiophen-2′-yl)thieno[3,4-c][1,2,5]thiadiazole on the photophysical, thermochromic, electrochemical, and spectroelectrochemical properties are reported and discussed in comparison to a series of D–A copolymers with various donor units and the corresponding dithiophenylthienothiadiazole (DT or EHT) acceptor units. The new copolymers, CDTDBT and CEHTDBT, exhibit interesting electrochromic behaviours with fast response times, which reach full optical contrast in 0.3 s. These new copolymers have the potential to be used for optical switching. Workplace Institute of Macromolecular Chemistry Contact Eva Čechová, cechova@imc.cas.cz ; Tel.: 296 809 358 Year of Publishing 2020 Electronic address https://pubs.rsc.org/en/content/articlelanding/2019/TC/C9TC01105F#!divAbstract
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