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The photoisomerization of polymethine dyes under laser irradiation

  • Physical Chemistry
  • Published:
Bulletin of the Academy of Sciences of the USSR, Division of chemical science Aims and scope

Conclusions

  1. 1.

    Photoisomerization of the polymethine dyes proceeds from the zeroth vibrational sub-level of the excited singlet state of the isomer, being realized through the S *trans ⇝ So,cis; S *cis ⇝ So,trans radiationless transitions.

  2. 2.

    The assumption of similarity of the absorption spectra of the dye isomers is usually quite consistent with the experimental data, and can be used to determine the spectral characteristics of the photoisomers.

  3. 3.

    Theoretical methods of determining the quantum yield in photoisomerization have been developed, and their validity confirmed experimentally.

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Authors and Affiliations

  1. Institute of Chemical Physics, Academy of Sciences of the USSR, Moscow

    A. P. Darmanyan, V. A. Kuz'min & Yu. E. Borisevich

Authors
  1. A. P. Darmanyan
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  2. V. A. Kuz'min
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  3. Yu. E. Borisevich
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Additional information

Translated from Izvestiya Akademii Nauk SSSR, Seriya Khimicheskaya, No. 2, pp. 349–358, February, 1979.

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Darmanyan, A.P., Kuz'min, V.A. & Borisevich, Y.E. The photoisomerization of polymethine dyes under laser irradiation. Russ Chem Bull 28, 321–329 (1979). https://doi.org/10.1007/BF00925876

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  • DOI: https://doi.org/10.1007/BF00925876

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