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Thermal Isomerization of Hydroxyazobenzenes as a Platform for Vapor Sensing
[Image: see text] Photoisomerization of azobenzene derivatives is a versatile tool for devising light-responsive materials for a broad range of applications in photonics, robotics, microfabrication, and biomaterials science. Some applications rely on fast isomerization kinetics, while for others, bi...
Autores principales: | , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
American Chemical Society
2018
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Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5871339/ https://www.ncbi.nlm.nih.gov/pubmed/29607244 http://dx.doi.org/10.1021/acsmacrolett.8b00093 |
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author | Poutanen, Mikko Ahmed, Zafar Rautkari, Lauri Ikkala, Olli Priimagi, Arri |
author_facet | Poutanen, Mikko Ahmed, Zafar Rautkari, Lauri Ikkala, Olli Priimagi, Arri |
author_sort | Poutanen, Mikko |
collection | PubMed |
description | [Image: see text] Photoisomerization of azobenzene derivatives is a versatile tool for devising light-responsive materials for a broad range of applications in photonics, robotics, microfabrication, and biomaterials science. Some applications rely on fast isomerization kinetics, while for others, bistable azobenzenes are preferred. However, solid-state materials where the isomerization kinetics depends on the environmental conditions have been largely overlooked. Herein, an approach to utilize the environmental sensitivity of isomerization kinetics is developed. It is demonstrated that thin polymer films containing hydroxyazobenzenes offer a conceptually novel platform for sensing hydrogen-bonding vapors in the environment. The concept is based on accelerating the thermal cis–trans isomerization rate through hydrogen-bond-catalyzed changes in the thermal isomerization pathway, which allows for devising a relative humidity sensor with high sensitivity and quick response to relative humidity changes. The approach is also applicable for detecting other hydrogen-bonding vapors such as methanol and ethanol. Employing isomerization kinetics of azobenzenes for vapor sensing opens new intriguing possibilities for using azobenzene molecules in the future. |
format | Online Article Text |
id | pubmed-5871339 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2018 |
publisher | American Chemical Society |
record_format | MEDLINE/PubMed |
spelling | pubmed-58713392018-03-28 Thermal Isomerization of Hydroxyazobenzenes as a Platform for Vapor Sensing Poutanen, Mikko Ahmed, Zafar Rautkari, Lauri Ikkala, Olli Priimagi, Arri ACS Macro Lett [Image: see text] Photoisomerization of azobenzene derivatives is a versatile tool for devising light-responsive materials for a broad range of applications in photonics, robotics, microfabrication, and biomaterials science. Some applications rely on fast isomerization kinetics, while for others, bistable azobenzenes are preferred. However, solid-state materials where the isomerization kinetics depends on the environmental conditions have been largely overlooked. Herein, an approach to utilize the environmental sensitivity of isomerization kinetics is developed. It is demonstrated that thin polymer films containing hydroxyazobenzenes offer a conceptually novel platform for sensing hydrogen-bonding vapors in the environment. The concept is based on accelerating the thermal cis–trans isomerization rate through hydrogen-bond-catalyzed changes in the thermal isomerization pathway, which allows for devising a relative humidity sensor with high sensitivity and quick response to relative humidity changes. The approach is also applicable for detecting other hydrogen-bonding vapors such as methanol and ethanol. Employing isomerization kinetics of azobenzenes for vapor sensing opens new intriguing possibilities for using azobenzene molecules in the future. American Chemical Society 2018-03-10 2018-03-20 /pmc/articles/PMC5871339/ /pubmed/29607244 http://dx.doi.org/10.1021/acsmacrolett.8b00093 Text en Copyright © 2018 American Chemical Society This is an open access article published under an ACS AuthorChoice License (http://pubs.acs.org/page/policy/authorchoice_termsofuse.html) , which permits copying and redistribution of the article or any adaptations for non-commercial purposes. |
spellingShingle | Poutanen, Mikko Ahmed, Zafar Rautkari, Lauri Ikkala, Olli Priimagi, Arri Thermal Isomerization of Hydroxyazobenzenes as a Platform for Vapor Sensing |
title | Thermal Isomerization of Hydroxyazobenzenes as a Platform
for Vapor Sensing |
title_full | Thermal Isomerization of Hydroxyazobenzenes as a Platform
for Vapor Sensing |
title_fullStr | Thermal Isomerization of Hydroxyazobenzenes as a Platform
for Vapor Sensing |
title_full_unstemmed | Thermal Isomerization of Hydroxyazobenzenes as a Platform
for Vapor Sensing |
title_short | Thermal Isomerization of Hydroxyazobenzenes as a Platform
for Vapor Sensing |
title_sort | thermal isomerization of hydroxyazobenzenes as a platform
for vapor sensing |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5871339/ https://www.ncbi.nlm.nih.gov/pubmed/29607244 http://dx.doi.org/10.1021/acsmacrolett.8b00093 |
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