ArticleCommunications materials2024
Strategies to control humidity sensitivity of azobenzene isomerisation kinetics in polymer thin films.
Article in Communications materials, 2024. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 6 papers.
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Who cites it
6 citing papers in PubMed.
- Multiscale Analysis of the Impact of the Isomerization of 4-Amine Tetraortho-Azobenzenes on the Structure and Dynamics of Tubular Micelles.Langmuir : the ACS journal of surfaces and colloids · 2026Article
- Halogen bond-driven azo-hydrazone tautomerisation: a computational study.Journal of molecular modeling · 2026Article
- Neuromorphic Light-Responsive Organic Matter for in Materia Reservoir Computing.Advanced materials (Deerfield Beach, Fla.) · 2025Article
- Advances in applied supramolecular technologies 2021-2025.Chemical Society reviews · 2025Review
- Azobenzene protonation as a tool for temperature sensing.Beilstein journal of organic chemistry · 2025Article
- Strategies to control humidity sensitivity of azobenzene isomerisation kinetics in polymer thin films.Communications materials · 2024Article
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Authors and funding
9 authors.
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Abstract
Azobenzenes are versatile photoswitches that garner interest in applications ranging from photobiology to energy storage. Despite their great potential, transforming azobenzene-based discoveries and proof-of-concept demonstrations from the lab to the market is highly challenging. Herein we give an overview of a journey that started from a discovery of hydroxyazobenzene's humidity sensitive isomerisation kinetics, developed into commercialization efforts of azobenzene-containing thin film sensors for optical monitoring of the relative humidity of air, and arrives to the present work aiming for better design of such sensors by understanding the different factors affecting the humidity sensitivity. Our concept is based on thermal isomerisation kinetics of tautomerizable azobenzenes in polymer matrices which, using pre-defined calibration curves, can be converted to relative humidity at known temperature. We present a small library of tautomerizable azobenzenes exhibiting humidity sensitive isomerisation kinetics in hygroscopic polymer films. We also investigate how water absorption properties of the polymer used, and the isomerisation kinetics are linked and how the azobenzene content in the thin film affects both properties. Based on our findings we propose simple strategies for further development of azobenzene-based optical humidity sensors.
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