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https://doi.org/10.15480/882.5013
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. |
URI: | http://hdl.handle.net/11420/15032 | 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: | ![]() |
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