Biochemistry (Moscow)

, Volume 84, Issue 8, pp 911–922 | Cite as

Photophysical Properties of Upconverting Nanoparticle–Phthalocyanine Complexes

  • D. A. GvozdevEmail author
  • E. P. Lukashev
  • V. V. Gorokhov
  • V. Z. Pashchenko


Interaction between upconverting nanoparticles and aluminum octacarboxyphthalocyanine was studied. The efficiency of non-radiative energy transfer from the nanoparticles to phthalocyanine increased with the number of phthalocyanine molecules adsorbed on the nanoparticle, but only up to a certain limit. Further increase in the phthalocyanine concentration resulted in a decrease of its sensitized fluorescence due to the dimerization of dye molecules on the nanoparticle surface. When subjected to infrared irradiation, phthalocyanine molecules in the hybrid complex generated singlet oxygen. The observed effects are of interest in regard to the targeted search for new components of efficient third-generation hybrid photosensitizers.


UCNP upconversion photosensitizers FRET singlet oxygen 



(aluminum) phthalocyanine


photodynamic therapy




reactive oxygen species


time-correlated single photon counting


(upconverting) nanoparticle


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Conflict of interest. The authors declare no conflict of interest in financial or any other sphere.

Ethical approval. This article does not contain any studies with human participants or animals performed by any of the authors.


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Copyright information

© Pleiades Publishing, Ltd. 2019

Authors and Affiliations

  • D. A. Gvozdev
    • 1
    Email author
  • E. P. Lukashev
    • 1
  • V. V. Gorokhov
    • 1
  • V. Z. Pashchenko
    • 1
  1. 1.Lomonosov Moscow State University, Faculty of BiologyMoscowRussia

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