Mervyn Ho Kong Man, Henry Chak Man Yau and Kou Okuro
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引用次数: 0
Abstract
Efficient solubilisation of fullerenes in aqueous media is crucial for their photodynamic therapy (PDT) applications. We demonstrated the efficacy of guanidinium-appended γ-cyclodextrin (CDGu) as a novel solubiliser for C60 and C70 fullerenes, achieving exceptionally high aqueous concentrations of 3.1 mM and 0.37 mM, respectively, through simple mechanical mixing in the presence of Na+ ions. The resulting complexes, CDGu⊃C60 and CDGu⊃C70, enabled efficient fullerene transfer to cell membranes, a critical factor for PDT efficacy. Notably, CDGu⊃C70 exhibited excellent singlet oxygen (102) generation (quantum yield ΦΔ = 0.77 at 630 nm) and induced >90% cell death with only 5 min of white light exposure in vitro. This research highlights the importance of molecular dispersion in enhancing fullerenes’ photosensitising activity and membrane transfer, potentially advancing fullerene-based PDT approaches.
期刊介绍:
Materials Chemistry Frontiers focuses on the synthesis and chemistry of exciting new materials, and the development of improved fabrication techniques. Characterisation and fundamental studies that are of broad appeal are also welcome.
This is the ideal home for studies of a significant nature that further the development of organic, inorganic, composite and nano-materials.