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CD spectra of polypeptoids with varying monomer composition and length: ▪, compound 4 (NspeNspeNsce)3; □, 5 (NrpeNrpeNam)4; ○, 6 (NsceNsceNspe)10; •, 13 (Nsme)12. Peptoid concentration was 0.2 mg/ml (≈1 mM residue molarity for all species) in 10 mM sodium phosphate (pH 7.0) at 25°C.
