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While bio‐inspired synthesis offers great potential for controlling nucleation and growth of inorganic particles, precisely tuning biomolecule–particle interactions is a long‐standing challenge. Herein, we used variations in peptoid sequence to manipulate peptoid–Au interactions, leading to the synthesis of concave five‐fold twinned, five‐pointed Au nanostars via a process of repeated particle attachment and facet stabilization. Ex situ and liquid‐phase TEM observations show that a balance between particle attachment biased to occur near the star points, preferential growth along the [100] direction, and stabilization of (111) facets is critical to forming star‐shaped particles. Molecular simulations predict that interaction strengths between peptoids and distinct Au facets differ significantly and thus can alter attachment kinetics and surface energies to form the stars. This work provides new insights into how sequence‐defined ligands affect particle growth to regulate crystal morphology. [ABSTRACT FROM AUTHOR]

Facet Stabilization, Five-Fold Twinned Au Star, Particle Attachment, Sequence-Defined Peptoids Frontispiz: Peptoid-Directed Formation of Five-Fold Twinned Au Nanostars through Particle Attachment and Facet Stabilization Keywords: Facet Stabilization; Five-Fold Twinned Au Star; Particle Attachment; Sequence-Defined Peptoids EN Facet Stabilization Five-Fold Twinned Au Star Particle Attachment Sequence-Defined Peptoids 1 1 1 03/23/22 20220328 NES 220328 B Nanopartikel b Die peptoiddirigierte Bildung von verzwillingten Au-Nanosternen durch Partikelanlagerung und Facettenstabilisierung wird im Forschungsartikel von James J. DeYoreo, Chun-Long Chen et al. vorgestellt (e202201980). [Extracted from the article]