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Peptoid‐Directed Formation of Five‐Fold Twinned Au Nanostars through Particle Attachment and Facet Stabilization.

Authors :
Jin, Biao
Yan, Feng
Qi, Xin
Cai, Bin
Tao, Jinhui
Fu, Xiaofeng
Tan, Susheng
Zhang, Peijun
Pfaendtner, Jim
Naser, Nada Y.
Baneyx, François
Zhang, Xin
DeYoreo, James J.
Chen, Chun‐Long
Source :
Angewandte Chemie International Edition. 3/28/2022, Vol. 61 Issue 14, p1-11. 11p.
Publication Year :
2022

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. [ABSTRACT FROM AUTHOR]

Details

Language :
English
ISSN :
14337851
Volume :
61
Issue :
14
Database :
Academic Search Index
Journal :
Angewandte Chemie International Edition
Publication Type :
Academic Journal
Accession number :
155864635
Full Text :
https://doi.org/10.1002/anie.202201980