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Permanent link (DOI): https://doi.org/10.7939/R3DF6KH03

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Electrochemically color tunable poly(N-isopropylacrylamide) microgel-based etalons Open Access

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Author or creator
Xu, Wenwen
Gao, Yongfeng
Serpe, Michael J.
Additional contributors
Subject/Keyword
Crystals
Kinetics
Pixels
Polyelectrolyte Gels
Hysteresis
Photonic Gels
Type of item
Journal Article (Published)
Language
English
Place
Time
Description
In this submission, pH responsive poly(N-isopropylacrylamide)–based microgels were used to fabricate optical devices (etalons). We demonstrate that the optical properties of the etalons could be manipulated upon the application of an appropriate electric potential between the etalon and a counter electrode, both in an electrolyte solution. An appropriate electrical potential hydrolyzes the water of the electrolyte solution, which subsequently changes the pH of the electrolyte solution. Since solution pH is able to change the solvation state of the microgels, and the etalon's optical properties depend on the microgel's solvation state, the etalon's optical properties can be tuned with an applied electrical potential. We show that the etalon's optical properties (color) is stable for many hours, until an appropriate potential is applied to bring the solution pH back to its initial value. The device's color switching kinetics were also probed, and showed significant color changes on the minute time scale. The dramatic optical property changes coupled with the reversibility of the device's color makes this system potentially useful for display device applications.
Date created
2014
DOI
doi:10.7939/R3DF6KH03
License information
© The Royal Society of Chemistry 2014 distributed under an Attribution 3.0 Unported Licence
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Citation for previous publication
Xu, W., Gao, Y., and Serpe, M. (2014). Electrochemically color tunable poly(N-isopropylacrylamide) microgel-based etalons. Journal of Materials Chemistry C, 2(20), 3873-3878.
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