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Influence of azasubstitution on the electronic absorption spectra of phthalocyanins

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

Conclusions

  1. 1.

    Some new tert-butyl-substituted azaanalogs, possessing increased solubility in organic solvents, were synthesized for a study of the influence of azasubstitution on the electronic absorption spectra of phthalocyanin.

  2. 2.

    Azasubstitution in the phthalocyanin molecules does not change the position of the absorption bands in the near UV region, while the long-wave absorption bands undergo a substantial hypsochromic shift, the value of which depends on the number of supplementary nitrogen atoms and on their position.

  3. 3.

    These peculiarities of the spectra of phthalocyanins are explained by the nature of the molecular orbitals, between which the correspondingπ-electronic transitions occur.

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Authors and Affiliations

  1. Institute of Heteroorganic Compounds, Academy of Sciences of the USSR, USSR

    E. G. Gal'pern, E. A. Luk'yanets & M. G. Gal'pern

Authors
  1. E. G. Gal'pern
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  2. E. A. Luk'yanets
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  3. M. G. Gal'pern
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Additional information

Translated from Izvestiya Akademii Nauk SSSR, Seriya Khimicheskaya, No. 9, pp. 1976–1980, September, 1973.

The authors would like to thank N. P. Gambaryan for his discussion of the results of the calculation.

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Gal'pern, E.G., Luk'yanets, E.A. & Gal'pern, M.G. Influence of azasubstitution on the electronic absorption spectra of phthalocyanins. Russ Chem Bull 22, 1925–1929 (1973). https://doi.org/10.1007/BF00929377

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  • DOI: https://doi.org/10.1007/BF00929377

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