Abstract
Spectral, luminescent, and time-resolved properties of 2,4-dibenzylidenecyclobutanone and its diethylamino, methylthio, methoxy, and dimethoxy derivatives have been studied. The electron-donating substituents shift bathochromically the absorption band maximum by 45–140 nm relative to unsubstituted dienones and the fluorescence maximum by 50–125 nm relative to the methoxy derivative. Upon the laser pulse, dienones convert to the triplet state with a lifetime of 0.15–3.5 μs and a stable photoproduct is formed.
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Funding
The study was supported by the Ministry of Science and High Education within the State Program for FSRC “Crystallography and Photonics,” Russian Academy of Sciences in part of the laser pulse photolysis study and by the Russian Science Foundation, project no. 19-13-00020, in part of the synthesis and spectral and luminescent measurements of dienones.
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Translated by T. Nekipelova
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Gutrov, V.N., Zakharova, G.V., Fomina, M.V. et al. Molecular Photonics of 2,4-Dibenzylidenecyclobutanone and Its Derivatives. High Energy Chem 54, 303–307 (2020). https://doi.org/10.1134/S0018143920050069
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DOI: https://doi.org/10.1134/S0018143920050069