Alkylated indacenodithieno[3,2-b] thiophene-based all donor ladder-type conjugated polymers for organic thin film transistors
File(s)
Accepted version
Author(s)
Type
Journal Article
Abstract
We report the synthesis of a series of indacenodithieno[3,2-b]thiophene (IDTT) based conjugated polymers by copolymerization with three different electron rich co-monomers [thiophene (T), thieno[3,2-b] thiophene (TT) and dithieno[3,2-b:2′,3′-d]thiophene (DTT)] under Stille coupling conditions. The resulting all-donor polymers show very good solubility in common solvents and exhibit similar optical, thermal and electronic properties. However, the performance of these semiconductors in thin film transistor devices varied and was highly dependent on the nature of the co-monomer. All polymers exhibited unipolar p-type charge transport behaviour, with the mobility values following the trend of IDTT-TT > IDTT-DTT > IDTT-T. The peak saturation mobility value of IDTT-TT was extracted to be 1.1 cm 2 V -1 s -1 , amongst the highest mobility for all-donor conjugated polymers reported to date.
Date Issued
2018-01-29
Date Acceptance
2018-01-29
Citation
Journal of Materials Chemistry C, 2018, 6 (8), pp.2004-2009
ISSN
2050-7534
Publisher
Royal Society of Chemistry
Start Page
2004
End Page
2009
Journal / Book Title
Journal of Materials Chemistry C
Volume
6
Issue
8
Copyright Statement
© 2018 The Royal Society of Chemistry.
Sponsor
EPSRC
Grant Number
EP/L016702/1
Publication Status
Published
Date Publish Online
2018-01-29