Herein, we present for the first time an organic–inorganic hybrid material comprising indolenine-based heptamethine cyanine dye adsorbed on silica gel, which shows vapochromism to amines or chlorinated solvents, leading to a color change.
M. Shibayama, Y. Uehashi, S. Ajioka, Y. Kubota, T. Inuzuka and K. Funabiki, New J. Chem., 2023, 47, 5262 DOI: 10.1039/D3NJ00060E
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