Abstract
Synthesis, study of structure and photochromic properties of new salt spiropyran of indoline series containing a fluorine substituent in the 6′-position of the 2H-chromene moiety have been described in the work. The structure of the compound has been confirmed by 1H NMR spectroscopy and X-ray diffraction analysis. Comparison of the structure of the compound with the previously studied analogue containing a methyl group instead of a fluorine atom in the 6′-position of the [2H]-chromene moiety has been made. This compound has been found to be photochromic, long-wavelength absorption maximum of its open form shows a bathochromic shift, and lifetime is increased three times as compared with the methyl analogue.
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Original Russian Text © M.B. Luk’yanova, V.V. Tkachev, A.D. Pugachev, B.S. Luk’yanov, G.V. Shilov, V.I. Minkin, S.M. Aldoshin, 2018, published in Doklady Akademii Nauk, 2018, Vol. 480, No. 1, pp. 50–54.
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Luk’yanova, M.B., Tkachev, V.V., Pugachev, A.D. et al. New Salt Spiropyran of Indoline Series with Fluorine Substituent. Dokl Chem 480, 81–84 (2018). https://doi.org/10.1134/S0012500818050014
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DOI: https://doi.org/10.1134/S0012500818050014