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Peptoid-directed formation of five-fold twinned au nanostars through particle attachment and facet stabilization

DOI: 10.1002/anie.202201980 DOI Help

Authors: Biao Jin (Pacific Northwest National Laboratory) , Feng Yan (Pacific Northwest National Laboratory; Linyi University) , Xin Qi (University of Washington) , Bin Cai (Pacific Northwest National Laboratory; Shandong University) , Jinhui Tao (Pacific Northwest National Laboratory) , Xiaofeng Fu (Florida State University) , Susheng Tan (University of Pittsburgh) , Peijun Zhang (Diamond Light Source; University of Oxford) , Jim Pfaendtner (University of Washington; Pacific Northwest National Laboratory) , Nada Y. Naser (University of Washington) , François Baneyx (University of Washington) , Xin Zhang (Pacific Northwest National Laboratory) , James J. Deyoreo (Pacific Northwest National Laboratory; University of Washington) , Chun-Long Chen (Pacific Northwest National Laboratory; University of Washington)
Co-authored by industrial partner: No

Type: Journal Paper
Journal: Angewandte Chemie International Edition , VOL 13

State: Published (Approved)
Published: March 2022

Open Access Open Access

Abstract: 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.

Journal Keywords: Facet Stabilization; Five-Fold Twinned Au Star; Particle Attachment; Sequence-Defined Peptoids

Subject Areas: Chemistry, Biology and Bio-materials

Technical Areas:

Added On: 17/03/2022 09:33

Angew Chem Int Ed - 2022 - Jin - Peptoid%E2%80%90Directed Formation of Five%E2%80%90Fold Twinned Au Nanostars through Particle Attachment.pdf

Discipline Tags:

Biochemistry Chemistry Life Sciences & Biotech

Technical Tags: