Abstract
Phototransformations of 6-nitro-8-methoxy-substituted indoline spiropyran in acetonitrile have been studied by laser kinetic spectroscopy (laser photolysis) with single- and double-pulse excitation. The role of the triplet state in the kinetics of photocoloration of spiropyran has been revealed. It has been shown that photochromic transformations of spiropyran involve unstable trans-isomers (conformers) of the open merocyanine form of spiropyran. Data on the transformation kinetics of the trans-isomers are presented.
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Funding
The work was supported by the Ministry of Science and Higher Education of the Russian Federation within the framework of the state assignment of the Federal Research Center “Crystallography and Photonics” of the Russian Academy of Sciences in terms of spectral–kinetic research and by the Russian Science Foundation, project no. 22-13-00064, in terms of spectral research.
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Atabekyan, L.S., Chibisov, A.K., Svyatoslavskaya, T.A. et al. Single- and Double-Pulse Laser Kinetic Spectroscopy of Indoline Spiropyran. High Energy Chem 57, 391–395 (2023). https://doi.org/10.1134/S0018143923050016
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DOI: https://doi.org/10.1134/S0018143923050016