Light-emitting poly(dendrimers)

Gunning, J.P., Knights, K.A., Ribierre, J.-C., Harding, R.E., Levell, J.W., Burn, P.L. and Samuel, I.D.W. (2008). Light-emitting poly(dendrimers). In: So, F. and Adachi, C., Proceedings of SPIE Vol. 7051. Organic Light Emitting Materials and Devices XII, San Diego, CA, USA, (70511X1-70511X10). August, 2008. doi:10.1117/12.800083

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Author Gunning, J.P.
Knights, K.A.
Ribierre, J.-C.
Harding, R.E.
Levell, J.W.
Burn, P.L.
Samuel, I.D.W.
Title of paper Light-emitting poly(dendrimers)
Conference name Organic Light Emitting Materials and Devices XII
Conference location San Diego, CA, USA
Conference dates August, 2008
Convener Society of Photo-Optical Instrumentation Engineers
Proceedings title Proceedings of SPIE Vol. 7051   Check publisher's open access policy
Journal name Organic Light Emitting Materials and Devices Xii   Check publisher's open access policy
Place of Publication USA
Publisher SPIE
Publication Year 2008
Year available 2008
Sub-type Fully published paper
DOI 10.1117/12.800083
Open Access Status File (Publisher version)
ISBN 978-0-8194-7271-7
ISSN 0277-786X
Editor So, F.
Adachi, C.
Volume 7051
Start page 70511X1
End page 70511X10
Total pages 11
Language eng
Abstract/Summary Organic light-emitting diodes (OLEDs) have great potential for displays and lighting applications. For large area displays the ideal materials would be both phosphorescent and solution processible. These requirements mean that the materials need to be able to be patterned and the most advanced method for forming pixelated displays is inkjet printing. Light-emitting phosphorescent dendrimers have given high efficiency monochrome displays with the emitting layer deposited by spin-coating. However, the viscosity of the dendrimer solutions is insufficient for inkjet printing. We report the development of a new class of light-emitting materials, namely poly(dendrimers) in which a green emissive phosphorescent dendrimer is attached to a poly(styrene) backbone. Free radical polymerization of a dendrimer-styrene monomer gave a poly(dendrimer) with a weight average molecular weight of 24000 and a polydispersity of 3.6. A dilute Solution of the dendrimer had a viscosity 15% higher than the neat solvent. Comparison of the photophysical studies of the poly(dendrimer) versus a model monomer dendrimer showed that the PL spectrum was broader and red-shifted, and the PL quantum yield around 50% lower. This was attributed to intermolecular interactions of the emissive dendrimers, which are held closely together oil the polymer backbone.
Subjects E1
030303 Optical Properties of Materials
030306 Synthesis of Materials
970102 Expanding Knowledge in the Physical Sciences
970103 Expanding Knowledge in the Chemical Sciences
Keyword dendrimer
poly(dendrimer)
OLED
phosphorescence
Q-Index Code E1
Q-Index Status Confirmed Code
Institutional Status UQ
Additional Notes Copyright 2008 Society of Photo-Optical Instrumentation Engineers. One print or electronic copy may be made for personal use only. Systematic reproduction and distribution, duplication of any material in this paper for a fee or for commercial purposes, or modification of the content of the paper are prohibited.

Document type: Conference Paper
Sub-type: Fully published paper
Collections: 2009 Higher Education Research Data Collection
School of Chemistry and Molecular Biosciences
 
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Created: Wed, 01 Apr 2009, 19:29:26 EST by Jennifer Falknau on behalf of School of Chemistry & Molecular Biosciences