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Y. Kuziv et al.
cell near the laser beam transmission region [15]. Thus, the absorption of laser light
λ irr = 650 nm occurs in Au nanoparticles. Since the fluorescence in the analyzed
samples is not observed and there are no reasons for photochemical transformations,
it can be assumed that the scattering of all absorbed light energy happens by excitation
of oscillations. Namely, all absorbed light energy is transformed into thermal energy.
Thus, the advantage of a ternary nanosystem D-g-PAA/AuNPs/Ce6 for photodynamic therapy based on two factors: production of singlet oxygen by photosensitizer and local heating (hypertermia) of solution near AuNPs under laser irradiation. This conclusion explains the successful examination of D-g-PAA/AuNPs/Ce6
nanocomposite for photodynamic treatment of tumor cells [10].
Acknowledgements This publication is supported in part by the Ministry of the Education
and Science of Ukraine: joint Ukrainian-Belarusian research and development projects “Design
and physico-chemical properties of novel multicomponent nanosystems for the treatment and
diagnostics of solid tumors” (2019–2020).
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