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Normalized fluorescence quenching of the PP unit (0.02 mM) of 1–4 at 450 nm in water containing CB[8] (0.01 mM). (a) 1–4 by Dye-1. (b) 1–4 by Dye-2~4. (c) 1 by Drug-1~3. (d) 1 by Peptide-1~4. (e) 1 by sDNA-1~4 and DNA-1,2. (f) 1 by PAMAM-1~3. [anion] represents the total concentration of the anionic unit of the guests.
