Molecular-Level Control over Plasmonic Properties in Silver Nanoparticle/Self-Assembling Peptide Hybrids

The plasmonic properties of silver nanoparticle (AgNP) arrays are directly controlled by AgNP size, shape, and spatial arrangement. Reported here is a strategy to prepare chiral AgNP arrays templated by two constitutionally isomeric aromatic peptide amphiphiles (APAs), KSC′EKS and C′EKSKS (KS = S-aroylthiooxime-modified lysine, C′ = citrulline, and E = glutamic acid). In phosphate buffer, both APAs initially self-assembled into nanoribbons with...