Funct. Mater. 2022; 29 (2): 189-192.
Luminescence of singlet oxygen generated by fullerene C60 - aminopropylsilica nanocomposites
1Taras Shevchenko National University of Kyiv, 64/13 Volodymyrs'ka Str., 01601 Kyiv, Ukraine
2National University of Kyiv-Mohyla Academy, 2 Skovorody Str., 04070 Kyiv, Ukraine
3Vernadskii Institute of General and Inorganic Chemistry, National Academy of Sciences of Ukraine, 32/34 Academician Palladin Ave., 03080 Kyiv, Ukraine
4Institute for Scintillation Materials, National Academy of Sciences of Ukraine, 60 Nauky Ave., 61072 Kharkiv, Ukraine
Immobilization of C60 fullerene molecules on silica nanoparticles is a promising way to design nanosystems for X-ray photodynamic therapy. Here, generation of singlet oxygen by C60 fullerene aminopropylsilica nanocomposites with and without attached palladium ions, as well as by pristine C60 fullerene was studied. Intensive luminescence spectra of singlet oxygen stimulated by 405 nm excitation of C60 fullerene solution, as well as suspensions of fullerene aminopropylsilica nanocomposites with and without attached palladium ions in benzene were obtained. It was shown that immobilization of C60 fullerene on aminopropylsilica nanoparticles, both in the absence and in the presence of attached palladium ions, does not significantly affect the efficiency of singlet oxygen generation by C60 fullerene. Thus, C60 fullerene attached to aminopropylsilica nanoparticles could be used for the designing of sensitizer nanosystems for X-ray photodynamic therapy.
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