Peptoid‐Directed Formation of Five‐Fold Twinned Au Nanostars through Particle Attachment and Facet Stabilization
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.
Document Details
- Document Type
- Pub Defense Publication
- Publication Date
- Mar 15, 2022
- Source ID
- 10.1002/anie.202201980
Entities
People
- Biao Jin
- Bin Cai
- Chun-Long Chen
- Feng Yan
- François Baneyx
- James DeYoreo
- Jim Pfaendtner
- Jinhui Tao
- Nada Y. Naser
- Peijun Zhang
- Susheng Tan
- Xiaofeng Fu
- Xin Qi
- Xin Zhang
Organizations
- Diamond Light Source
- Florida State University
- Linyi University
- Pacific Northwest National Laboratory
- Shandong University
- United States Army Research Laboratory
- University of Oxford
- University of Pittsburgh
- University of Washington