Ordered Surface Structuring of Spherical Colloids with Binary Nanoparticle Superlattices

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Title: Ordered Surface Structuring of Spherical Colloids with Binary Nanoparticle Superlattices
Authors: Meder, FabianThomas, Steffi S.Bollhorst, TobiasDawson, Kenneth A.
Permanent link: http://hdl.handle.net/10197/12163
Date: 26-Mar-2018
Online since: 2021-05-18T11:31:57Z
Abstract: Surface-patterning colloidal matter in the sub-10 nm regime generates exceptional functionality in biology and photonic and electronic materials. Techniques of artificially generating functional patterns in the small nanoscale advanced in a fascinating manner in the last several years. However, they remain often restricted to planar and noncolloidal substrates. Patterning colloidal matter in solution via bottom-up assembly of smaller subunits on larger core particles is highly challenging because it is necessary to force the subunits onto randomly moving objects. Consequently, the non-equilibrium conditions present during nanoparticle self-assembly are difficult to control to eventually achieve the desired material structures. Here, we describe the formation of surface patterns with intrinsic periodic repeats of 8.9 ± 0.9 nm and less on hard, amorphous colloidal core particles by assembling binary nanoparticle superlattices on the curved particle surface. The colloidal environment is preserved during the entire bottom-up crystallization of variable building blocks (here, monodispersed 5 nm Au and 2.4 nm Pd nanoparticles (NPs) and 230 nm SiO core particles) into AB -like, binary, and isotropic superlattice domains on the amorphous cores. The three-dimensional, bottom-up assembly technique is a new tool for patterning colloidal matter in the sub-10 nm surface regime for gaining access to multicomponent metamaterials for bionanoscience, photonics, and electronics. 2 13
Funding Details: Irish Research Council
Science Foundation Ireland -- replace
Funding Details: German Research Foundation (DFG)
Type of material: Journal Article
Publisher: ACS
Journal: Nano Letters
Volume: 18
Issue: 4
Start page: 2511
End page: 2518
Copyright (published version): 2018 American Chemical Society
Keywords: NanostructuringColloidal crystalsSurface functionalizationEntropy-driven formationNanocrystal superlatticesCrystalsMicrocapsules
DOI: 10.1021/acs.nanolett.8b00173
Language: en
Status of Item: Peer reviewed
ISSN: 1530-6984
This item is made available under a Creative Commons License: https://creativecommons.org/licenses/by-nc-nd/3.0/ie/
Appears in Collections:Centre for Bionano Interactions (CBNI) Research Collection
Chemistry Research Collection

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