Molecular Doping of a High Mobility Diketopyrrolopyrrole-Dithienylthieno[3,2-b]thiophene Donor-Acceptor Copolymer with F6TCNNQ

Karpov Y, Erdmann T, Stamm M, Lappan U, Guskova O, Malanin M, Raguzin I, Beryozkina T, Bakulev V, Guenther F, Gemming S, Seifert G, Hambsch M, Mannsfeld S, Voit B, Kiriy A (2017)

Publication Type: Journal article

Publication year: 2017

Journal

Macromolecules American Chemical Society

Book Volume: 50

Pages Range: 914-926

Journal Issue: 3

DOI: 10.1021/acs.macromol.6b02452

Abstract

Herein we present a molecular doping of a high mobility diketopyrrolopyrrole-dithienylthieno[3,2-b]thiophene donor-acceptor copolymer poly[3,6-(dithiophene-2-yl)-2,5-di(6-dodecyloctadecyl)pyrrolo[3,4-c]pyrrole-1,4-dione-alt-thieno[3,2-b]thiophene], PDPP(6-DO)2TT, with the electron-deficient compound hexafluorotetracyanonaphthoquinodimethane (F6TCNNQ). Despite a slightly negative HOMOdonor-LUMOacceptor offset of −0.12 eV which may suggest a reduced driving force for the charge transfer (CT), a partial charge CT was experimentally observed in PDPP(6-DO)2TT:F6TCNNQ by absorption, vibrational, and electron paramagnetic resonance spectroscopies and predicted by density functional theory calculations. Despite the modest CT, PDPP(6-DO)2TT:F6TCNNQ films possess unexpectedly high conductivities up to 2 S/cm (comparable with the conductivities of the benchmark doped polymer system P3HT:F4TCNQ having a large positive offset). The observation of the high conductivity in doped PDPP(6-DO)2TT films can be explained by a high hole mobility in PDPP(6-DO)2TT blends which compensates a lowered (relatively to P3HT:F4TCNQ) concentration of free charge carriers. We also show that F6TCNNQ-doped P3HT, the system which has not been reported so far to the best of our knowledge, exhibits a conductivity up to 7 S/cm, which exceeds the conductivity of the benchmark P3HT:F4TCNQ system.

Involved external institutions

Leibniz-Institut für Polymerforschung Dresden e. V. DE Germany (DE) Ural Federal University B.N. Yeltsin RU Russian Federation (RU) Technische Universität Dresden DE Germany (DE)

How to cite

APA:

Karpov, Y., Erdmann, T., Stamm, M., Lappan, U., Guskova, O., Malanin, M.,... Kiriy, A. (2017). Molecular Doping of a High Mobility Diketopyrrolopyrrole-Dithienylthieno[3,2-b]thiophene Donor-Acceptor Copolymer with F6TCNNQ. Macromolecules, 50(3), 914-926. https://doi.org/10.1021/acs.macromol.6b02452

MLA:

Karpov, Yevhen, et al. "Molecular Doping of a High Mobility Diketopyrrolopyrrole-Dithienylthieno[3,2-b]thiophene Donor-Acceptor Copolymer with F6TCNNQ." Macromolecules 50.3 (2017): 914-926.

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