Syntheses of fluorene/carbazole-thienothiadiazole copolymers for organic photovoltaics

0358687 - ÚMCH 2012 RIV US eng J - Journal Article
Výprachtický, Drahomír - Kmínek, Ivan - Pavlačková, Petra - Cimrová, Věra
Syntheses of fluorene/carbazole-thienothiadiazole copolymers for organic photovoltaics.
ECS Transactions. Roč. 33, č. 17 (2011), s. 111-118. ISSN 1938-5862.
[ECS Meeting /218./. Las Vegas, 10.10.2010-15.10.2010]
R&D Projects: GA MŠMT(CZ) 1M06031
Institutional research plan: CEZ:AV0Z40500505
Keywords : low-band gap conjugated polymers * Cadogan ring closure * electron-rich and electron-deficient monomers
Subject RIV: BM - Solid Matter Physics ; Magnetism

The Suzuki coupling reaction was utilized for the syntheses of conjugated polymers with alternating conjugated electron-rich donor unit and conjugated electron-deficient acceptor unit in the same polymer backbone. The conjugated copolymers based on fluorene-thienothiadiazole and carbazole-thienothiadiazole structural units were synthesized. Organic multistep synthesis was applied for the preparation of tailored monomers, namely of the 4,6-bis[5`-bromo-3`-(2-ethylhexyl)thien-2`-yl]thieno[3,4-c][1,2,5]-thiadiazole (aromatic dihalocompound) and of the 9-(2-ethyl-hexyl)-2,7-bis(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)carba-zole (aromatic diboronic acid ester). These low-band gap materials were utilized as active layers in organic solar cells; see the second contribution (E8-1625) from our laboratory on 218th ECS meeting.
Permanent Link: http://hdl.handle.net/11104/0196648