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- W2517962827 abstract "Thiolate-protected Au25 nanoclusters (NCs) have been shown to be efficient 1O2 photosensitizers. The 1O2-generation efficiency of thiolate-protected Au NCs is expected to depend on the thiolate ligand species and size of the gold clusters. In the present study, Au25(glutathione)18 nanoclusters (Au25(SG)18 NCs) and bovine-serum-albumin (BSA)-protected Au25 nanoclusters (BSA–Au25 NCs) were synthesized to investigate the effect of different thiolate ligands on the 1O2 generation. The efficiency of 1O2 generation by the Au25 NCs that were photo-excited at 532 nm was evaluated with methotrexate as a chemical probe. The effect of Au NC size on the 1O2-generation efficiency of thiolate-protected Au18 and Au25 NCs was also investigated. The 1O2-generation efficiency of BSA–Au25 NCs was higher than that of Au25(SG)18 NCs. The long lifetime of the electronic excitations and the high-photo-stability were key factors facilitating the formation of 1O2 in BSA–Au25 NCs. The effect of Au NC size on the 1O2-generation efficiency of thiolate-protected Au NCs, Aun(SR)m, decreased in the following order: Au25(SR)18>Au18(SR)14." @default.
- W2517962827 created "2016-09-16" @default.
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- W2517962827 date "2016-12-01" @default.
- W2517962827 modified "2023-10-12" @default.
- W2517962827 title "Effects of ligand species and cluster size of biomolecule-protected Au nanoclusters on eff iciency of singlet-oxygen generation" @default.
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- W2517962827 doi "https://doi.org/10.1016/j.jlumin.2016.08.059" @default.
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