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UV-vis absorption spectra of AuNPs solution with trimers, pentamers, and octamers dual-labeled oligomers. Spectra were recorded 5 hours after peptoids (green, a), DS-peptoids (purple, b), peptides (orange, c), mono-labeled peptide trimer (dashed orange), or only acetonitrile (black) were added to the AuNPs aqueous solution. Bottom right: graphical illustration of the oligomers relative conformational space.
