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In relation to this article, we declare that there is no conflict of interest.
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Received February 12, 2017
Accepted March 16, 2017
articles This is an Open-Access article distributed under the terms of the Creative Commons Attribution Non-Commercial License (http://creativecommons.org/licenses/bync/3.0) which permits unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited.
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Fabrication of sensory structure based on poly (ethylene glycol)-diacrylate hydrogel embedding polydiacetylene

1Department of Chemical and Biological Engineering, Korea University, Seoul 02841, Korea 2KU-KIST Graduate School of Converging Science and Technology, Korea University, Seoul 02841, Korea
ahn@korea.ac.kr
Korean Journal of Chemical Engineering, July 2017, 34(7), 2092-2095(4), 10.1007/s11814-017-0083-4
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Abstract

Hydrogel-based sensory structures were developed by embedding polydiacetylene supramolecules into poly-(ethylene glycol)-diacrylate (PEG-DA) to detect chemical gases and cyclodextrin and to determine pH values on the basis of a fluorescence change. We found the optimal condition for patterning-fabrication by controlling the volumetric mixture ratio of the water-soluble PEG-DA and aqueous polydiacetylene vesicle solution. Then, we determined that this hydrogel-based polydiacetylene structure optically responded selectively against vapor-phase targets: ammonia, ethanol, and aldehyde; aqueous solutions with various pH values; and cyclodextrin derivatives. These results could be extended to various label-free sensing applications of hydrogel-based chemo-biosensors.

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