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Issue 32, 2018
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Photocrosslinking polymeric ionic liquids via anthracene cycloaddition for organic electronics

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Abstract

Polymeric ionic liquids (i.e., PILs) are single ion-conducting materials that exhibit the thermal and electrochemical stability of ionic liquids and the mechanical properties of polymers. Although PILs are exciting for a variety of applications in energy conversion and storage, the tradeoff between mechanics and ion transport remains an important limitation in materials design. Herein, a photocrosslinkable PIL based on the cycloaddition reaction of anthracene is converted from a viscous liquid into a soft solid without detrimental effects on the bulk ionic conductivity. The independent control of mechanical- and ion-conducting properties results from negligible changes in polymer segmental dynamics (i.e., glass transition temperature) upon crosslinking. This was demonstrated for both a polymer (i.e., N = 279) and its corresponding oligomer (i.e., N = 10). The ease of processability facilitated by the presented molecular design is illustrated by both patterning the PIL into μm-sized features, and incorporating it as a dielectric in thin-film transistors for low-voltage operation independent of device fabrication geometry.

Graphical abstract: Photocrosslinking polymeric ionic liquids via anthracene cycloaddition for organic electronics

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Supplementary files

Article information


Submitted
25 May 2018
Accepted
24 Jul 2018
First published
02 Aug 2018

J. Mater. Chem. C, 2018,6, 8762-8769
Article type
Paper
Author version available

Photocrosslinking polymeric ionic liquids via anthracene cycloaddition for organic electronics

B. C. Popere, G. E. Sanoja, E. M. Thomas, N. S. Schauser, S. D. Jones, J. M. Bartels, M. E. Helgeson, M. L. Chabinyc and R. A. Segalman, J. Mater. Chem. C, 2018, 6, 8762
DOI: 10.1039/C8TC02561D

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