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. 2019 Sep 4;10:3986. doi: 10.1038/s41467-019-12042-7

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© The Author(s) 2019, corrected publication 2021

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Fig. 5 — Proton-induced emission in dry photosensitiser (PS) gels. a Rose Bengal (RoseB) gel and b Erythrosin B (ErB) gel. The black lines correspond to the proton-induced emission of the gels (1 g gelatin (per 4 mL water, 500 µM PS), the blue lines denote the fluorescence emission from photonic excitation and the red lines show photon-induced phosphorescence (λ_ex = 530 nm for RoseB and 470 nm for ErB)