Nanoscale Faceting and Ligand Shell Structure Dominate the Self‐Assembly of Nonpolar Nanoparticles into Superlattices

Abstract: Self‐assembly of nanoscale structures at liquid–solid interfaces occurs in a broad range of industrial processes and is found in various phenomena in nature. Conventional theory assumes spherical particles and homogeneous surfaces, but that model is oversimplified, and nanoscale in situ observations are needed for a more complete understanding. Liquid‐phase scanning transmission electron microscopy (LP‐STEM) is used to examine the interactions that direct the self‐assembly of superlattices formed by gold nanoparticles (AuNPs) in nonpolar liquids. Varying the molecular coating of the substrate modulates short‐range attraction and leads to switching between a range of different geometric structures, including hexagonal close‐packed (hcp), simple hexagonal (sh), dodecahedral quasi‐crystal (dqc), and body‐centered cubic (bcc) lattices, as well as random distributions. Langevin dynamics simulations explain the experimental results in terms of the interplay between nanoparticle faceting, ligand shell structure, and substrate–NP interactions.

Standort
Deutsche Nationalbibliothek Frankfurt am Main
Umfang
Online-Ressource
Sprache
Englisch

Erschienen in
Nanoscale Faceting and Ligand Shell Structure Dominate the Self‐Assembly of Nonpolar Nanoparticles into Superlattices ; day:17 ; month:04 ; year:2022 ; extent:10
Advanced materials ; (17.04.2022) (gesamt 10)

Urheber
Bo, Arixin
Liu, Yawei
Kuttich, Björn
Kraus, Tobias
Widmer‐Cooper, Asaph
Jonge, Niels de

DOI
10.1002/adma.202109093
URN
urn:nbn:de:101:1-2022041815050064856127
Rechteinformation
Open Access; Der Zugriff auf das Objekt ist unbeschränkt möglich.
Letzte Aktualisierung
15.08.2025, 07:32 MESZ

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