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Schmode P, Hochgesang A, Goel M, Meichsner F, Mohanraj J, Fried M, Thelakkat M. A Solution‐Processable Pristine PEDOT Exhibiting Excellent Conductivity, Charge Carrier Mobility, and Thermal Stability in the Doped State. MACROMOL CHEM PHYS 2021. [DOI: 10.1002/macp.202100123] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Philip Schmode
- Applied Functional Polymers University of Bayreuth Universitätsstr. 30 95440 Bayreuth Germany
| | - Adrian Hochgesang
- Applied Functional Polymers University of Bayreuth Universitätsstr. 30 95440 Bayreuth Germany
| | - Mahima Goel
- Applied Functional Polymers University of Bayreuth Universitätsstr. 30 95440 Bayreuth Germany
| | - Florian Meichsner
- Applied Functional Polymers University of Bayreuth Universitätsstr. 30 95440 Bayreuth Germany
| | - John Mohanraj
- Applied Functional Polymers University of Bayreuth Universitätsstr. 30 95440 Bayreuth Germany
| | - Martina Fried
- Applied Functional Polymers University of Bayreuth Universitätsstr. 30 95440 Bayreuth Germany
| | - Mukundan Thelakkat
- Applied Functional Polymers University of Bayreuth Universitätsstr. 30 95440 Bayreuth Germany
- Bavarian Polymer Institute University of Bayreuth Universitätsstr. 30 95440 Bayreuth Germany
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Dolynchuk O, Schmode P, Fischer M, Thelakkat M, Thurn-Albrecht T. Elucidating the Effect of Interfacial Interactions on Crystal Orientations in Thin Films of Polythiophenes. Macromolecules 2021. [DOI: 10.1021/acs.macromol.0c02510] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Oleksandr Dolynchuk
- Experimental Polymer Physics, Institute of Physics, Martin Luther University Halle-Wittenberg, Von-Danckelmann-Platz 3, D-06120 Halle, Germany
| | - Philip Schmode
- Applied Functional Polymers, Macromolecular Chemistry I, University of Bayreuth, Universitätsstraße 30, D-95447 Bayreuth, Germany
| | - Matthias Fischer
- Experimental Polymer Physics, Institute of Physics, Martin Luther University Halle-Wittenberg, Von-Danckelmann-Platz 3, D-06120 Halle, Germany
| | - Mukundan Thelakkat
- Applied Functional Polymers, Macromolecular Chemistry I, University of Bayreuth, Universitätsstraße 30, D-95447 Bayreuth, Germany
- Bavarian Polymer Institute, University of Bayreuth, Universitätsstraße 30, D-95447 Bayreuth, Germany
| | - Thomas Thurn-Albrecht
- Experimental Polymer Physics, Institute of Physics, Martin Luther University Halle-Wittenberg, Von-Danckelmann-Platz 3, D-06120 Halle, Germany
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Schmode P, Schötz K, Dolynchuk O, Panzer F, Köhler A, Thurn-Albrecht T, Thelakkat M. Influence of ω-Bromo Substitution on Structure and Optoelectronic Properties of Homopolymers and Gradient Copolymers of 3-Hexylthiophene. Macromolecules 2020. [DOI: 10.1021/acs.macromol.0c00352] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Philip Schmode
- Applied Functional Polymers, Department of Macromolecular Chemistry I, University of Bayreuth, Universitätsstrasse 30, 95440 Bayreuth, Germany
| | - Konstantin Schötz
- Experimental Physics II, University of Bayreuth, 95440 Bayreuth, Germany
| | - Oleksandr Dolynchuk
- Experimental Polymer Physics, Martin Luther University Halle−Wittenberg, Von-Danckelmann-Platz 3, 06120 Halle, Germany
| | - Fabian Panzer
- Experimental Physics II, University of Bayreuth, 95440 Bayreuth, Germany
| | - Anna Köhler
- Experimental Physics II, University of Bayreuth, 95440 Bayreuth, Germany
| | - Thomas Thurn-Albrecht
- Experimental Polymer Physics, Martin Luther University Halle−Wittenberg, Von-Danckelmann-Platz 3, 06120 Halle, Germany
| | - Mukundan Thelakkat
- Applied Functional Polymers, Department of Macromolecular Chemistry I, University of Bayreuth, Universitätsstrasse 30, 95440 Bayreuth, Germany
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Schmode P, Savva A, Kahl R, Ohayon D, Meichsner F, Dolynchuk O, Thurn-Albrecht T, Inal S, Thelakkat M. The Key Role of Side Chain Linkage in Structure Formation and Mixed Conduction of Ethylene Glycol Substituted Polythiophenes. ACS Appl Mater Interfaces 2020; 12:13029-13039. [PMID: 32066232 DOI: 10.1021/acsami.9b21604] [Citation(s) in RCA: 41] [Impact Index Per Article: 10.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
Abstract
Functionalizing conjugated polymers with polar ethylene glycol side chains enables enhanced swelling and facilitates ion transport in addition to electronic transport in such systems. Here, we investigate three polythiophene homopolymers (P3MEET, P3MEEMT, and P3MEEET) having differently linked (without spacer and with methyl and ethyl spacer, respectively) diethylene glycol side chains. All the polymers were tested in organic electrochemical transistors (OECTs). They show drastic differences in the device performance. The highest μOECT C* product of 11.5 F/cm·V·s was obtained for ethyl-spaced P3MEEET. How the injection and transport of ions is influenced by the side-chain linkage was studied with electrochemical impedance spectroscopy, which shows a dramatic increase in volumetric capacitance from 80 ± 9 up to 242 ± 17 F/cm3 on going from P3MEET to P3MEEET. Thus, ethyl-spaced P3MEEET exhibits one of the highest reported volumetric capacitance values among p-type polymers. Moreover, P3MEEET exhibits in dry thin films an organic field-effect transistor (OFET) hole mobility of 0.005 cm2/V·s, highest among the three, which is one order of magnitude higher than that for P3MEEMT. The extracted hole mobility from OECT (oxidized swollen state) and the hole mobility in solid-state thin films (OFET) show contradictory trends for P3MEEMT and P3MEEET. In order to understand exactly the properties in the hydrated and dry states, the crystal structure of the polymers was investigated with wide-angle X-ray scattering (WAXS) and grazing incidence WAXS, and the water uptake under applied potential was monitored using electrochemical quartz crystal microbalance with dissipation monitoring (E-QCMD). These measurements reveal an amorphous state for P3MEET and a semicrystalline state for P3MEEMT and P3MEEEET. On the other hand, E-QCMD confirms that P3MEEET swells 10 times more than P3MEEMT in the oxidized state. Thus, the importance of the ethyl spacer toward crystallinity and mixed-conduction properties was clearly demonstrated, emphasizing the impact of side chain linkage of diethylene glycol. This detailed study offers a better understanding of how to design high-performance organic mixed conductors.
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Affiliation(s)
- Philip Schmode
- Applied Functional Polymers, University of Bayreuth, Universitätsstr. 30, 95440 Bayreuth, Germany
| | - Achilleas Savva
- Biological and Environmental Science and Engineering, King Abdullah University of Science and Technology (KAUST), Thuwal 23955-6900, Saudi Arabia
| | - Robert Kahl
- Experimental Polymer Physics Group, Martin Luther University Halle-Wittenberg, Von-Danckelmann-Platz 3, 06120 Halle, Germany
| | - David Ohayon
- Biological and Environmental Science and Engineering, King Abdullah University of Science and Technology (KAUST), Thuwal 23955-6900, Saudi Arabia
| | - Florian Meichsner
- Applied Functional Polymers, University of Bayreuth, Universitätsstr. 30, 95440 Bayreuth, Germany
| | - Oleksandr Dolynchuk
- Experimental Polymer Physics Group, Martin Luther University Halle-Wittenberg, Von-Danckelmann-Platz 3, 06120 Halle, Germany
| | - Thomas Thurn-Albrecht
- Experimental Polymer Physics Group, Martin Luther University Halle-Wittenberg, Von-Danckelmann-Platz 3, 06120 Halle, Germany
| | - Sahika Inal
- Biological and Environmental Science and Engineering, King Abdullah University of Science and Technology (KAUST), Thuwal 23955-6900, Saudi Arabia
| | - Mukundan Thelakkat
- Applied Functional Polymers, University of Bayreuth, Universitätsstr. 30, 95440 Bayreuth, Germany
- Bavarian Polymer Institute, University of Bayreuth, Universitätsstr. 30, 95440 Bayreuth, Germany
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