Journal
JOURNAL OF INDUSTRIAL AND ENGINEERING CHEMISTRY
Volume 114, Issue -, Pages 77-83Publisher
ELSEVIER SCIENCE INC
DOI: 10.1016/j.jiec.2022.06.038
Keywords
Diacetylene-silica core-shell nanoparticles; Layer -by -Layer (LbL); Immobilization; Photomask patterning; Enhanced sensory figure
Funding
- National Research Foundation of Korea [NRF-2021R1A2C3009955]
- Korea University Grant
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The study developed a sensory figure multilayer by immobilizing diacetylene (DA) vesicles on a substrate using silica nanoparticles shell. The vesicles were enhanced with surface activity and structural stability by forming a dense shell of silica nanoparticles. Alphabet patterning was achieved to create visible and fluorescent sensors, which showed rapid recognition of chemical stimuli. The manufactured patterning sensory figure demonstrated long-lasting functionality.
Diacetylene (DA) vesicles were immobilized on a substrate using silica nanoparticles shell by the layerby-layer method to develop a sensory figure multilayer. Silica nanoparticles were densely formed on the surface of the DA vesicle by surface modification and electrostatic interactions; these nanoparticles function as shell on the surface of the vesicles, enhancing the surface activity and structural stability of the vesicles. The DA-silica core-shell nanoparticles can be easily immobilized on rigid, flexible, and porous substrates. In addition, alphabet patterning was achieved by photopolymerization of the substrate on a photomask for the development of visible and fluorescent sensors. Using this polydiacetylene (PDA)based patterning sensory figure, chemical stimuli were recognized within 5 s, signaled by a blue-tored color change and photoluminescence. In addition, it was confirmed that the manufactured PDAbased patterning sensory figure works normally even after 3 months, and long-lasting is possible. Based on this work, the patterning technology applicable to various substrates can be applied to the development of PDA-based sensing materials for industrial field sensors.(c) 2022 The Korean Society of Industrial and Engineering Chemistry. Published by Elsevier B.V. All rights reserved.
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