Number of the records: 1
Photophysical and electrochemical properties of novel luminescent and photoconductive copolymers
- 1.
SYSNO ASEP 0427560 Document Type C - Proceedings Paper (int. conf.) R&D Document Type Conference Paper Title Photophysical and electrochemical properties of novel luminescent and photoconductive copolymers Author(s) Cimrová, Věra (UMCH-V) RID, ORCID
Výprachtický, Drahomír (UMCH-V) RID, ORCID
Kmínek, Ivan (UMCH-V)
Dzhabarov, Vagif (UMCH-V) RID
Pokorná, Veronika (UMCH-V) RIDSource Title ECS Transactions. - Pennington : Electrochemical Society, 2014 - ISSN 1938-5862 Pages roč. 58, č. 28, s. 15-30 Number of pages 16 s. Publication form Print - P Action ECS Meeting /224./ Event date 27.10.2013-01.11.2013 VEvent location San Francisco Country US - United States Event type WRD Language eng - English Country US - United States Keywords conjugated polymers ; photophysics ; luminescence Subject RIV CD - Macromolecular Chemistry R&D Projects GAP106/12/0827 GA ČR - Czech Science Foundation (CSF) GA13-26542S GA ČR - Czech Science Foundation (CSF) Institutional support UMCH-V - RVO:61389013 EID SCOPUS 84905026510 DOI 10.1149/05828.0015ecst Annotation Photophysical and electrochemical properties of novel luminescent carbazole-based, carbazole-fluorene and fluorene-bithiophene copolymers, and photoconductive copolymers containing 4,6- bis(3-dodecylthien-2-yl)thieno[3,4-c][1,2,5]thiadiazole as electron acceptor unit and various electron donor unit (9,9-dioctylfluorene, 9,9-bis(2-ethylhexyl)fluorene, 2,5-bis(dodecyloxy)benzene, 2,5- didodecylbenzene, 3,3′-didodecyl-2,2′-bithiophene, 2,7-carbazole or dithieno[3,2-b:2′,3′-d]silole derivatives) were studied. Effects of molecular weight and side-chain nature and length on photophysical properties are reported. Luminescent carbazolebased and carbazole-fluorene copolymers exhibited an intense photoluminescent (PL) emission in blue spectral region with maxima at about 417-419 nm in tetrahydrofuran (THF) solutions and at 430-436 nm in thin films, whereas 9,9-dihexadecylfluorenebithiophene copolymers PL emission in green spectral region with maxima at about 495 nm in THF solutions and at 542 nm in thin films. The donor-acceptor copolymers absorb in a long-wavelength region up to near infrared and possess a narrow optical band gap in the range of 1.1 - 1.4 eV depending on the character of donor units and alkyl side-chain nature. They exhibited ambipolar redox properties, high electron affinity, electrochromic and thermochromic behavior. Workplace Institute of Macromolecular Chemistry Contact Eva Čechová, cechova@imc.cas.cz ; Tel.: 296 809 358 Year of Publishing 2015
Number of the records: 1