Abstract
2-(2-Carboethoxy-3,4-dichloro-6-hydroxyphenyl)benzoxazole exhibits a number of chromogenic properties including solvatochromism and photochromism. Solvatochromic properties are due to the existence of keto–enol equilibrium and dissociation equilibrium. T-type negative photochromism is a two-step process of Z–E photoisomerization and the subsequent intramolecular proton transfer in the ground state to form the enol form. The multiemission profile is created by a number of isomeric forms, among which the enol form exhibits the most intense fluorescence with an anomalous Stokes shift due to intramolecular proton transfer in the excited state.
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This work was carried out with the support of the Ministry of Science and Higher Education of the Russian Federation (state assignment for 2023, project no. FENW_2023-0020).
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Translated by V. Makhlyarchuk
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Vetrova, E.V., Tupaeva, I.O., Minkin, V.I. et al. Chromogenic and Fluorescent Properties of 2-(2-Carboethoxy-3,4-Dichloro-6-Hydroxyphenyl)Benzoxazole. High Energy Chem 57 (Suppl 3), S488–S493 (2023). https://doi.org/10.1134/S0018143923090199
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DOI: https://doi.org/10.1134/S0018143923090199