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Issue 4, 2014
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High balanced ambipolar charge carrier mobility in benzodipyrrolidone conjugated polymers

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Abstract

A series of alternating donor–acceptor polymers, consisting of diphenyl-benzodipyrrolidone (BDP) and oligothiophene were synthesized and used in top-gate bottom-contact organic field-effect transistors. The BDP polymers exhibit ambipolar charge transport with high and balanced mobilities up to 0.21 cm2 V−1 s−1 for holes and 0.18 cm2 V−1 s−1 for electrons. Increasing the length of the oligothiophene reduces the electron mobility roughly by an order of magnitude per thiophene unit, but the hole mobility remains high. This behaviour is explained using DFT calculations by a strong localization of the electrons on the BDP units.

Graphical abstract: High balanced ambipolar charge carrier mobility in benzodipyrrolidone conjugated polymers

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Publication details

The article was received on 17 Sep 2013, accepted on 18 Nov 2013 and first published on 19 Nov 2013


Article type: Paper
DOI: 10.1039/C3TC31844C
Citation: J. Mater. Chem. C, 2014,2, 731-735
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    High balanced ambipolar charge carrier mobility in benzodipyrrolidone conjugated polymers

    G. W. P. van Pruissen, E. A. Pidko, M. M. Wienk and R. A. J. Janssen, J. Mater. Chem. C, 2014, 2, 731
    DOI: 10.1039/C3TC31844C

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