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(a) Photographs of free chlorin e6 (Ce6) and DC dissolved in DMSO or DW (0.2 mg/mL Ce6). The arrow shows the precipitate of Ce6. (b) UV-visible absorbance spectra and (c) fluorescence emission spectra (λex = 360 nm) of free Ce6 and DC in DMSO or DW (10 μg/mL Ce6).
