Journal
DYES AND PIGMENTS
Volume 83, Issue 1, Pages 102-110Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.dyepig.2009.03.016
Keywords
Triphenylamine; Quinoxaline; Polyfluorene; Backbone; Pendant; Electroluminescence
Funding
- National Natural Science Foundation of China [20674066]
- Natural Science Foundation of Xinjiang Uygur Autonomous Region [200821123]
- Scientific Research Starting Foundation for Doctoral Graduate, Xinjiang University [BS080110]
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Novel, conjugated polyfluorene derivatives that comprised an electron-donating triphenylamine group in the backbone and pendant, electron-accepting quinoxaline moieties, were synthesized via the Suzuki coupling reaction and their UV-vis absorption, fluorescence emission and electrochemical properties were investigated. The copolymers were readily soluble in common organic solvents and displayed good film-forming ability and excellent thermal stability. Electroluminescence devices, comprising indium tin oxide/poly(3,4-ethylenedioxythiophene) doped with poly(styrenesulfonic acid)/emitting polymer/Ba/Al, in which the polymers were employed as emissive layers, exhibited superior performance compared to that of corresponding, poly(9,9-dioctylfluorene) and poly(9,9-dioctylfluorene-co-4,4'-triphenylamine) based devices, indicating that the polymers offer promise as emissive materials in polymeric light-emitting diodes. (C) 2009 Elsevier Ltd. All rights reserved.
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