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Short-time synthesis of poly[4,6-bis(3′-(2-ethylhexyl)thien-2′-yl)thieno[3,4-c][1,2,5]thiadiazole-alt-9,9-dioctylfluorene], its photophysical, electrochemical and photovoltaic properties
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SYSNO ASEP 0440636 Document Type J - Journal Article R&D Document Type Journal Article Subsidiary J Článek ve WOS Title Short-time synthesis of poly[4,6-bis(3′-(2-ethylhexyl)thien-2′-yl)thieno[3,4-c][1,2,5]thiadiazole-alt-9,9-dioctylfluorene], its photophysical, electrochemical and photovoltaic properties Author(s) Cimrová, Věra (UMCH-V) RID, ORCID
Kmínek, Ivan (UMCH-V)
Výprachtický, Drahomír (UMCH-V) RID, ORCID
Pokorná, Veronika (UMCH-V) RIDSource Title Polymer. - : Elsevier - ISSN 0032-3861
Roč. 59, 24 February (2015), s. 298-304Number of pages 7 s. Language eng - English Country GB - United Kingdom Keywords low-bandgap thienothiadiazole copolymer ; Suzuki coupling ; photophysics and photovoltaics Subject RIV CD - Macromolecular Chemistry R&D Projects GA13-26542S GA ČR - Czech Science Foundation (CSF) GAP106/12/0827 GA ČR - Czech Science Foundation (CSF) Institutional support UMCH-V - RVO:61389013 UT WOS 000350618000034 EID SCOPUS 84922136713 DOI https://doi.org/10.1016/j.polymer.2015.01.014 Annotation Short-time synthesis of new low-bandgap copolymer, CEHTF8, consisting of 4,6-bis(3′-(2-ethylhexyl)thien-2′-yl)thieno[3,4-c][1,2,5]thiadiazole and 9,9-dioctylfluorene by Suzuki coupling reaction in high-boiling solvents, such as chlorobenzene, dichlorobenzene and xylene is reported. Such synthesis yields high molecular copolymers in short reaction times of about 30 min; compared with these, several days are required using tetrahydrofuran (THF). It is proved that chlorinated solvents do not interfere with the reaction procedure and the final copolymers have the same structure and quality as those prepared in xylene or THF. High-molecular CEHTF8 copolymers of various molecular weights (MW) up to weight-average of MW 220 000 with low polydispersity index PDI 1.4–1.5 are synthesized. Their photophysical and electrochemical properties are reported. Photovoltaic devices with bulk heterojunction made of blends of copolymers possessing various MW and fullerene derivative [6,6]-phenyl-C61-butyric acid methyl ester ([60]PCBM) are prepared and characterized. Workplace Institute of Macromolecular Chemistry Contact Eva Čechová, cechova@imc.cas.cz ; Tel.: 296 809 358 Year of Publishing 2016
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