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Nanostructures induced by peptoids with varied numbers of Nce groups. A)–C) The structures of peptoids: Pep-2–Pep-4. Nce=N-(2-carboxyethl)glycine, Ncp=N-[2-(4-chlorophenyl)ethyl]glycines. D)–F) TEM images of Au nanocrystals induced by Pep-2 (D), Pep-3 (E), Pep-4 (F) at pH 9.1.
