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Publisher DOI: 10.1039/d2nr03043h
Title: Solvent controlled 2D structures of bottom-up fabricated nanoparticle superlattices
Language: English
Authors: Beck, Esko Erik 
Weimer, Agnes 
Feld, Artur 
Vonk, Vedran 
Noei, Heshmat 
Lott, Dieter 
Jeromin, Arno 
Kulkarni, Satishkumar 
Giuntini, Diletta 
Plunkett, Alexander 
Domènech Garcia, Berta 
Schneider, Gerold A. 
Vossmeyer, Tobias 
Weller, Horst 
Keller, Thomas F. 
Stierle, Andreas 
Issue Date: 8-Feb-2023
Publisher: RSC Publ.
Source: Nanoscale 15 (9): 4506-4514 (2023-02-08)
Abstract (english): 
We demonstrate that oleyl phosphate ligand-stabilized iron oxide nanocubes as building blocks can be assembled into 2D supercrystalline mono- and multilayers on flat YSZ substrates within a few minutes using a simple spin-coating process. As a bottom-up process, the growth takes place in a layer-by-layer mode and therefore by tuning the spin-coating parameters, the exact number of deposited monolayers can be controlled. Furthermore, ex situ scanning electron and atomic force microscopy as well as X-ray reflectivity measurements give evidence that the choice of solvent allows the control of the lattice type of the final supercrystalline monolayers. This observation can be assigned to the different Hansen solubilities of the solvents used for the nanoparticle dispersion because it determines the size and morphology of the ligand shell surrounding the nanoparticle core. Here, by using toluene and chloroform as solvents, it can be controlled whether the resulting monolayers are ordered in a square or hexagonal supercrystalline lattice.
DOI: 10.15480/882.5013
ISSN: 2040-3372
Journal: Nanoscale 
Institute: Keramische Hochleistungswerkstoffe M-9 
Document Type: Article
Project: SFB 986: Maßgeschneiderte Multiskalige Materialsysteme - M3 
License: CC BY-NC 3.0 (Attribution-NonCommercial) CC BY-NC 3.0 (Attribution-NonCommercial)
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