Please use this identifier to cite or link to this item: https://doi.org/10.1039/c2jm32376a
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dc.titleFuran substituted diketopyrrolopyrrole and thienylenevinylene based low band gap copolymer for high mobility organic thin film transistors
dc.contributor.authorSonar, P.
dc.contributor.authorZhuo, J.-M.
dc.contributor.authorZhao, L.-H.
dc.contributor.authorLim, K.-M.
dc.contributor.authorChen, J.
dc.contributor.authorRondinone, A.J.
dc.contributor.authorSingh, S.P.
dc.contributor.authorChua, L.-L.
dc.contributor.authorHo, P.K.H.
dc.contributor.authorDodabalapur, A.
dc.date.accessioned2014-10-16T08:29:25Z
dc.date.available2014-10-16T08:29:25Z
dc.date.issued2012-09-07
dc.identifier.citationSonar, P., Zhuo, J.-M., Zhao, L.-H., Lim, K.-M., Chen, J., Rondinone, A.J., Singh, S.P., Chua, L.-L., Ho, P.K.H., Dodabalapur, A. (2012-09-07). Furan substituted diketopyrrolopyrrole and thienylenevinylene based low band gap copolymer for high mobility organic thin film transistors. Journal of Materials Chemistry 22 (33) : 17284-17292. ScholarBank@NUS Repository. https://doi.org/10.1039/c2jm32376a
dc.identifier.issn09599428
dc.identifier.urihttp://scholarbank.nus.edu.sg/handle/10635/93872
dc.description.abstractA novel solution processable donor-acceptor (D-A) based low band gap polymer semiconductor poly{3,6-difuran-2-yl-2,5-di(2-octyldodecyl)-pyrrolo[3,4- c]pyrrole-1,4-dione-alt-thienylenevinylene} (PDPPF-TVT), was designed and synthesized by a Pd-catalyzed Stille coupling route. An electron deficient furan based diketopyrrolopyrrole (DPP) block and electron rich thienylenevinylene (TVT) donor moiety were attached alternately in the polymer backbone. The polymer exhibited good solubility, film forming ability and thermal stability. The polymer exhibits wide absorption bands from 400 nm to 950 nm (UV-vis-NIR region) with absorption maximum centered at 782 nm in thin film. The optical band gap (Eoptg) calculated from the polymer film absorption onset is around 1.37 eV. The π-energy band level (ionization potential) calculated by photoelectron spectroscopy in air (PESA) for PDPPF-TVT is around 5.22 eV. AFM and TEM analyses of the polymer reveal nodular terrace morphology with optimized crystallinity after 200 °C thermal annealing. This polymer exhibits p-channel charge transport characteristics when used as the active semiconductor in organic thin-film transistor (OTFT) devices. The highest hole mobility of 0.13 cm 2 V -1 s -1 is achieved in bottom gate and top-contact OTFT devices with on/off ratios in the range of 10 6-10 7. This work reveals that the replacement of thiophene by furan in DPP copolymers exhibits such a high mobility, which makes DPP furan a promising block for making a wide range of promising polymer semiconductors for broad applications in organic electronics. © The Royal Society of Chemistry 2012.
dc.description.urihttp://libproxy1.nus.edu.sg/login?url=http://dx.doi.org/10.1039/c2jm32376a
dc.sourceScopus
dc.typeArticle
dc.contributor.departmentPHYSICS
dc.contributor.departmentCHEMISTRY
dc.description.doi10.1039/c2jm32376a
dc.description.sourcetitleJournal of Materials Chemistry
dc.description.volume22
dc.description.issue33
dc.description.page17284-17292
dc.description.codenJMACE
dc.identifier.isiut000306972900083
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