Photophysical Properties of Upconverting Nanoparticle–Phthalocyanine Complexes

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 lim...

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Bibliographic Details
Published in:Biochemistry (Moscow) 2019-08, Vol.84 (8), p.911-922
Main Authors: Gvozdev, D. A., Lukashev, E. P., Gorokhov, V. V., Pashchenko, V. Z.
Format: Article
Language:English
Subjects:
Aluminum
Analysis
Biochemistry
Biomedical and Life Sciences
Biomedicine
Bioorganic Chemistry
Dimerization
Drug Discovery
Energy transfer
Fluorescence
Fluorescence Resonance Energy Transfer
I.R. radiation
Indoles - chemistry
Infrared Rays
Irradiation
Life Sciences
Materials
Microbiology
Microscopy, Electron, Transmission
Nanoparticles
Nanoparticles - chemistry
Neoplasms - therapy
Organometallic Compounds - chemistry
Osmolar Concentration
Photochemotherapy
Photosensitizing Agents - chemistry
Photosensitizing compounds
Phthalocyanins
Properties
Singlet oxygen
Singlet Oxygen - chemistry
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Summary: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.
ISSN:0006-2979
1608-3040
DOI:10.1134/S0006297919080078