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Synthesis and chara...
Synthesis and characterisation of poly(distyrylbenzene-block-hexa(ethylene oxide)) and its fluorinated analogue - Two new block copolymers and their application in electroluminescent devices
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- Cacialli, F. (författare)
- Department of Physics and Astronomy, University College London, Gower Street, London WC1E 6BT, United Kingdom
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- Feast, W.James (författare)
- IRC in Polymer Science and Technology, Department of Chemistry, University of Durham, South Road, Durham DH1 3LE, United Kingdom
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- Friend, R.H. (författare)
- Cavendish Laboratory, Madingley Road, Cambridge CB3 OHE, United Kingdom
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- de Jong, Michel P (författare)
- Linköpings universitet,Tekniska högskolan,Ytors Fysik och Kemi
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- Lovenich, P.W. (författare)
- Lövenich, P.W., IRC in Polymer Science and Technology, Department of Chemistry, University of Durham, South Road, Durham DH1 3LE, United Kingdom
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- Salaneck, William R (författare)
- Linköpings universitet,Tekniska högskolan,Ytors Fysik och Kemi
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(creator_code:org_t)
- 2002
- 2002
- Engelska.
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Ingår i: Polymer. - 0032-3861 .- 1873-2291. ; 43:12, s. 3555-3561
- Relaterad länk:
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https://urn.kb.se/re...
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https://doi.org/10.1...
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Abstract
Ämnesord
Stäng
- Two new soluble block copolymers are reported in which chromophores and hexa(ethylene oxide) units alternate along the polymer backbone. In polymer 1 the chromophore was the distyrylbenzene unit. The polymer was synthesised via the Wittig reaction and the ionization potential of 5.4 ± 0.2 eV was measured by cyclic voltammetry and photoelectron spectroscopy. Polymer 1 showed a high solid-state photoluminescence efficiency (34%) and was used to make efficient (0.5 cd/A) light emitting diodes (LEDs). Polymer 1 was also used in light emitting cells, these showed luminescence in reverse bias and a reduced turn-on voltage compared to the LEDs. Polymer 2, in which the chromophore was dodecafluoro-distryrylbenzene, was prepared via the Horner-Wittig reaction and showed an ionization potential of 6.25 ± 0.15 eV and a solid-state photoluminescence efficiency of 17%. It was used as electron-conducting layer in a LED but failed to give significant electroluminescence. The optical energy gap for both polymers was 3.0 eV. © 2002 Published by Elsevier Science Ltd.
Nyckelord
- Block-copolymer
- Fluoropolymer
- Synthesis
- TECHNOLOGY
- TEKNIKVETENSKAP
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- art (ämneskategori)
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