A New Class of Blue-Emitting Materials for LED Applications: Triarylamine N-Functionalised 2,7-Linked Carbazole Polymers
✍ Scribed by Hunan Yi; Ahmed Iraqi; Mathew Stevenson; Claire J. Elliott; David G. Lidzey
- Publisher
- John Wiley and Sons
- Year
- 2007
- Tongue
- English
- Weight
- 146 KB
- Volume
- 28
- Category
- Article
- ISSN
- 1022-1336
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✦ Synopsis
Abstract
Attachment of triarylamino‐functional groups at the 9‐position of 2,7‐linked carbazole polymers results in blue‐emitting materials with two independent redox processes that were attributed to the triarylamino groups and the polymer backbone, respectively. This new class of blue‐emitting conjugated polymers was prepared via a Suzuki cross‐coupling reaction and showed low turn‐on voltages in electroluminescent devices as a result of their low ionisation potentials. The photophysical, electrochemical and electroluminescent properties of these materials are discussed.
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