Hydrophobic halochromic aerogel capable of reversibly measuring acidic and basic vapors

A halochromic sensor that can visually and quickly monitor the information regarding the exposure of harmful chemicals to the human body is highly valuable in the safety and industrial fields. A general halochromic sensor uses a hydrophilic matrix to increase its detection sensitivity by promoting t...

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Autores principales:	Jeong Hui Lee, Jeeyin Park, Jonguk Yang, Keun-Hyeok Yang, Sanghyun Ju, Taekyung Lim, Sang-Mi Jeong
Formato:	article
Lenguaje:	EN
Publicado:	AIP Publishing LLC 2021
Materias:	Physics QC1-999
Acceso en línea:	https://doaj.org/article/257e7d413e884ebf9e7dfa4a7614c38f
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spelling	oai:doaj.org-article:257e7d413e884ebf9e7dfa4a7614c38f2021-12-01T18:52:06ZHydrophobic halochromic aerogel capable of reversibly measuring acidic and basic vapors2158-322610.1063/5.0067873https://doaj.org/article/257e7d413e884ebf9e7dfa4a7614c38f2021-11-01T00:00:00Zhttp://dx.doi.org/10.1063/5.0067873https://doaj.org/toc/2158-3226A halochromic sensor that can visually and quickly monitor the information regarding the exposure of harmful chemicals to the human body is highly valuable in the safety and industrial fields. A general halochromic sensor uses a hydrophilic matrix to increase its detection sensitivity by promoting the diffusion of foreign materials. However, it is difficult to maintain the reversibility, durability, and stability of the color change in the halochromic sensor due to the loss of halochromic dyes under continuous exposure to chemicals. This study investigates a hydrophobic halochromic aerogel sensor that is stable even when exposed to various external environments and reacts to both acids and bases. By embedding halochromic dyes in silica aerogels with a porous structure and hydrophobicity, the leaching of halochromic dyes can be prevented even when the aerogels are placed in aqueous solutions. Hydrophobic halochromic aerogels can detect vapors generated in acidic and basic solutions, and the color change in hydrophobic halochromic aerogels reacts stably even with repeated acid and base environmental changes, enabling accurate acid or base concentration detection. In addition, halochromic aerogels can be easily applied to various platforms because they can be combined with fabric, concrete blocks, pipes, and polymers such as polydimethylsiloxane to create composites. The halochromic aerogels derived in this study are expected to contribute to the development of color change sensors applicable to various work environments by greatly improving the color change reversibility, durability, and stability that are the most important characteristics of robust halochromic sensors.Jeong Hui LeeJeeyin ParkJonguk YangKeun-Hyeok YangSanghyun JuTaekyung LimSang-Mi JeongAIP Publishing LLCarticlePhysicsQC1-999ENAIP Advances, Vol 11, Iss 11, Pp 115115-115115-9 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Physics QC1-999
spellingShingle	Physics QC1-999 Jeong Hui Lee Jeeyin Park Jonguk Yang Keun-Hyeok Yang Sanghyun Ju Taekyung Lim Sang-Mi Jeong Hydrophobic halochromic aerogel capable of reversibly measuring acidic and basic vapors
description	A halochromic sensor that can visually and quickly monitor the information regarding the exposure of harmful chemicals to the human body is highly valuable in the safety and industrial fields. A general halochromic sensor uses a hydrophilic matrix to increase its detection sensitivity by promoting the diffusion of foreign materials. However, it is difficult to maintain the reversibility, durability, and stability of the color change in the halochromic sensor due to the loss of halochromic dyes under continuous exposure to chemicals. This study investigates a hydrophobic halochromic aerogel sensor that is stable even when exposed to various external environments and reacts to both acids and bases. By embedding halochromic dyes in silica aerogels with a porous structure and hydrophobicity, the leaching of halochromic dyes can be prevented even when the aerogels are placed in aqueous solutions. Hydrophobic halochromic aerogels can detect vapors generated in acidic and basic solutions, and the color change in hydrophobic halochromic aerogels reacts stably even with repeated acid and base environmental changes, enabling accurate acid or base concentration detection. In addition, halochromic aerogels can be easily applied to various platforms because they can be combined with fabric, concrete blocks, pipes, and polymers such as polydimethylsiloxane to create composites. The halochromic aerogels derived in this study are expected to contribute to the development of color change sensors applicable to various work environments by greatly improving the color change reversibility, durability, and stability that are the most important characteristics of robust halochromic sensors.
format	article
author	Jeong Hui Lee Jeeyin Park Jonguk Yang Keun-Hyeok Yang Sanghyun Ju Taekyung Lim Sang-Mi Jeong
author_facet	Jeong Hui Lee Jeeyin Park Jonguk Yang Keun-Hyeok Yang Sanghyun Ju Taekyung Lim Sang-Mi Jeong
author_sort	Jeong Hui Lee
title	Hydrophobic halochromic aerogel capable of reversibly measuring acidic and basic vapors
title_short	Hydrophobic halochromic aerogel capable of reversibly measuring acidic and basic vapors
title_full	Hydrophobic halochromic aerogel capable of reversibly measuring acidic and basic vapors
title_fullStr	Hydrophobic halochromic aerogel capable of reversibly measuring acidic and basic vapors
title_full_unstemmed	Hydrophobic halochromic aerogel capable of reversibly measuring acidic and basic vapors
title_sort	hydrophobic halochromic aerogel capable of reversibly measuring acidic and basic vapors
publisher	AIP Publishing LLC
publishDate	2021
url	https://doaj.org/article/257e7d413e884ebf9e7dfa4a7614c38f
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Hydrophobic halochromic aerogel capable of reversibly measuring acidic and basic vapors

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