The effect of dendronisation of arylamine centred chromophores on field effect transistor performance

Wren, Ellen J., Mutkins, Karyn, Aljada, Muhsen, Burn, Paul L., Meredith, Paul and Vamvounis, George (2010) The effect of dendronisation of arylamine centred chromophores on field effect transistor performance. Polymer Chemistry, 1 7: 1117-1126. doi:10.1039/c0py00083c

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Author Wren, Ellen J.
Mutkins, Karyn
Aljada, Muhsen
Burn, Paul L.
Meredith, Paul
Vamvounis, George
Title The effect of dendronisation of arylamine centred chromophores on field effect transistor performance
Journal name Polymer Chemistry   Check publisher's open access policy
ISSN 1759-9954
Publication date 2010-09
Sub-type Article (original research)
DOI 10.1039/c0py00083c
Open Access Status Not Open Access
Volume 1
Issue 7
Start page 1117
End page 1126
Total pages 10
Editor David Haddleton
Place of publication Cambridge, U.K.
Publisher Royal Society of Chemistry
Collection year 2011
Language eng
Subject C1
0303 Macromolecular and Materials Chemistry
0912 Materials Engineering
Formatted abstract
We report the design and synthesis of new dendronised hole transport materials and their first use in organic field effect transistors (OFETs) as solution processed amorphous channels. The dendrimers were comprised of a triphenylamine centre, core chromophores containing one or two thiophene units per arm, and first generation biphenyl dendrons with 2-ethylhexyloxy surface groups attached. The dendronised materials were found to be more easily processed than their non-dendronised equivalents. Top contact OFETS were fabricated and found to have hole mobilities in the saturated regime of 1.7 × 10−6 cm2 V−1 s−1 and 1.1 × 10−5 cm2 V−1 s−1 for dendrimers with one and two thiophene units in each arm of the chromophore, respectively. The devices had threshold voltages of around 10 V and ON/OFF ratios in the range 102 to 103. The OFET results demonstrate that for amorphous films it is important that the chromophore is as large as possible to allow for maximal intermolecular interactions.
© The Royal Society of Chemistry 2010
Keyword Light-emitting-diodes
Phosphorescent dendrimers
Organic semiconductors
Cored dendrimers
Q-Index Code C1
Q-Index Status Confirmed Code
Institutional Status UQ

Document type: Journal Article
Sub-type: Article (original research)
Collections: Centre for Organic Photonics and Electronics
Official 2011 Collection
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Citation counts: TR Web of Science Citation Count  Cited 12 times in Thomson Reuters Web of Science Article | Citations
Scopus Citation Count Cited 12 times in Scopus Article | Citations
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Created: Sun, 19 Sep 2010, 00:02:50 EST