Molecular Doping of a High Mobility Diketopyrrolopyrrole- Dithienylthieno{[}3,2-b]thiophene Donor-Acceptor Copolymer with F6TCNNQ / Karpov Yevhen,Erdmann Tim,Stamm Manfred,Lappan Uwe,Guskova Olga,Malanin Mikhail,Raguzin Ivan,Beryozkina Tetyana,Bakulev Vasiliy,Guenther Florian,Gemming Sibylle,Seifert Gotthard,Hambsch Mike,Mannsfeld Stefan,Voit Brigitte,Kiriy Anton // MACROMOLECULES. - 2017. - V. 50, l. 3. - P. 914-926.

ISSN/EISSN:

0024-9297 / 1520-5835

Type:

Article

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-thien o {[}3,2-b)] thioph en e], PDPP (6-DO)(2)TT, 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)(2)TT:F6TCNNQ by absorption, vibrational, and electron paramagnetic resonance spectroscopies and predicted by density functional theory calculations. Despite the modest CT, PDPP(6-DO)(2)TT:F6TCNNQ films possess unexpectedly high conductivities up to 2 S/cm (comparable with the conductivities of the benchmark doped polymer system P3HT:F4TCNQhaving a large positive offset). The observation of the high conductivity in doped PDPP(6-DO)(2)TT films can be explained by a high hole mobility in PDPP(6-DO)(2)TT 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.

Author keywords:

DENSITY-FUNCTIONAL THEORY; ORGANIC ELECTROLUMINESCENT DEVICES; CHARGE-TRANSFER; INFRARED-SPECTROSCOPY; DOPANT STRENGTH; ATOMIC CHARGES; WAVE-FUNCTIONS; SCALE FACTORS; POLYMER; CONDUCTIVITY

DOI:

10.1021/acs.macromol.6b02452

Web of Science ID:

ISI:000394410200022

Соавторы в МНС:

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Другие поля

Поле	Значение
Month	FEB 14
Publisher	AMER CHEMICAL SOC
Address	1155 16TH ST, NW, WASHINGTON, DC 20036 USA
Language	English
EISSN	1520-5835
Keywords-Plus	DENSITY-FUNCTIONAL THEORY; ORGANIC ELECTROLUMINESCENT DEVICES; CHARGE-TRANSFER; INFRARED-SPECTROSCOPY; DOPANT STRENGTH; ATOMIC CHARGES; WAVE-FUNCTIONS; SCALE FACTORS; POLYMER; CONDUCTIVITY
Research-Areas	Polymer Science
Web-of-Science-Categories	Polymer Science
Author-Email	kiriy@ipfdd.de
ResearcherID-Numbers	Umlauf, Ursula/D-3356-2014 Voit, Brigitte/D-4755-2009 Seifert, Gotthard/M-1340-2017
ORCID-Numbers	Voit, Brigitte/0000-0002-4531-691X Guskova, Olga/0000-0001-5925-6586
Funding-Acknowledgement	DFG {[}KI-1094/9]; German Excellence Initiative {[}EXC 1056]; German Academic Exchange Service (DAAD)
Funding-Text	We gratefully acknowledge support from DFG (grant KI-1094/9) and the German Excellence Initiative via the Cluster of Excellence EXC 1056 ``Center for Advancing Electronics Dresden{''} (CFAED). Y.K. thankfully acknowledges financial support by the German Academic Exchange Service (DAAD) within the frame of the DAAD-STIBET Program. We thank Dr. K.-J. Eichhorn for fruitful discussions concerning infrared spectroscopy experimental data.
Number-of-Cited-References	47
Usage-Count-Last-180-days	18
Usage-Count-Since-2013	18
Journal-ISO	Macromolecules
Doc-Delivery-Number	EL1VT