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(a) Brightness per particle of CdSe/ZnS (sample #1) and CdSe/CdS/ZnS (#2) before (black) and after (hatched) 40 min of UV illumination. (b) Occupancy of fluorescent NCs before (black) and after (hatched) illumination. Values of occupancy are relative to NC#2 without UV illumination (set as 1).
