Conclusions
The photoisomerizatioa of symmetrical carbocyanine dyes proceeds only from the first singlet excited electronic state and does not proceed from the higher excited states.
Literature cited
V. A. Kuz'min, A. M. Vinogradov, M. A. Al'perovich, and I. I. Levkoev, Dokl, Akad. Nauk SSSR,224, 139 (1975).
G. G. Dyadyusha, O. V. Przhonskaya, E. A. Tikhonov, and M. T. Shpak, Izv. Akad. Nauk SSSR, Ser. Fiz.,36, 945 (1972).
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Translated from Izvestiya Akademii Nauk SSSR, Seriya Khimicheskaya, No. 11, pp. 2613–2614, November, 1977.
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Vinogradov, A.M., Kuz'min, V.A. Photoisomerization of symmetrical carbocyanine dyes from higher excited states. Russ Chem Bull 26, 2419–2420 (1977). https://doi.org/10.1007/BF00958746
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DOI: https://doi.org/10.1007/BF00958746