Journal article
Joshua Tropp*, Dilara Meli*, Ruiheng Wu, Bohan Xu, Samuel Hunt, Jason Azoulay, Bryan Paulsen, Jonathan Rivnay
ACS. Mater. Lett., vol. 5, 2023, pp. 1367-1375
ACS. Mater. Lett., vol. 5, 2023, pp. 1367-1375
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APA
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Tropp*, J., Meli*, D., Wu, R., Xu, B., Hunt, S., Azoulay, J., … Rivnay, J. (2023). Revealing the Impact of Molecular Weight on Mixed Conduction in Glycolated Polythiophenes Through Electrolyte Choice. ACS. Mater. Lett., 5, 1367–1375. https://doi.org/10.1021/acsmaterialslett.2c01114
Chicago/Turabian
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Tropp*, Joshua, Dilara Meli*, Ruiheng Wu, Bohan Xu, Samuel Hunt, Jason Azoulay, Bryan Paulsen, and Jonathan Rivnay. “Revealing the Impact of Molecular Weight on Mixed Conduction in Glycolated Polythiophenes Through Electrolyte Choice.” ACS. Mater. Lett. 5 (2023): 1367–1375.
MLA
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Tropp*, Joshua, et al. “Revealing the Impact of Molecular Weight on Mixed Conduction in Glycolated Polythiophenes Through Electrolyte Choice.” ACS. Mater. Lett., vol. 5, 2023, pp. 1367–75, doi:10.1021/acsmaterialslett.2c01114.
BibTeX Click to copy
@article{joshua2023a,
title = {Revealing the Impact of Molecular Weight on Mixed Conduction in Glycolated Polythiophenes Through Electrolyte Choice},
year = {2023},
journal = {ACS. Mater. Lett.},
pages = {1367-1375},
volume = {5},
doi = {10.1021/acsmaterialslett.2c01114},
author = {Tropp*, Joshua and Meli*, Dilara and Wu, Ruiheng and Xu, Bohan and Hunt, Samuel and Azoulay, Jason and Paulsen, Bryan and Rivnay, Jonathan}
}
Developing material design guidelines for organic mixed ionic–electronic conductors (OMIECs) is critical to enable high efficacy mixed transport within bioelectronics. One important feature which has yet to be thoroughly explored is the role of molecular weight on OMIEC performance. In this work, we examined a series of prototypical glycolated polythiophene materials (P3MEEET) with systematically increasing molecular weights within organic electrochemical transistors (OECTs)─a common testbed for investigating mixed transport. We find that there is improved performance beyond an intermediate molecular weight; however, this relationship is electrolyte dependent. Operando analysis suggests that the enhanced mobility at higher molecular weights may be negated by significant swelling when operated in NaCl due to disruption of intercrystallite charge percolation. The role of molecular weight is revealed through operation in KTFSI, as doping occurs through cation expulsion, preventing detrimental swelling and maintaining percolative pathways. These findings demonstrate the importance of both molecular weight and electrolyte composition to enhance the performance of OMIECs.
