Journal Article

PUBDB-2023-01873

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png Solvent controlled 2D structures of bottom-up fabricated nanoparticle superlattices

Erik Beck, E. (Corresponding author)DESY* ; Weimer, A.Extern* ; Feld, A.Extern* ; Vonk, V.DESY* ; Noei, H.DESY* ; Lott, D.Hereon* ; Jeromin, A.DESY* ; Kulkarni, S.DESY* ; Giuntini, D.Extern* ; Plunkett, A.Extern* ; Domènech, B.Extern* ; Schneider, G.Extern* ; Vossmeyer, T.Extern* ; Weller, H.Extern* ; Keller, T. F.DESY* ; Stierle, A.DESY*

2023
RSC Publ. Cambridge

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Please use a persistent id in citations: doi:10.1039/D2NR03043H  doi:10.3204/PUBDB-2023-01873

Abstract: 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.

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Contributing Institute(s):

1. Nanolab (FS-NL)

Research Program(s):

1. 632 - Materials – Quantum, Complex and Functional Materials (POF4-632) (POF4-632)
2. DFG project 192346071 - SFB 986: Maßgeschneiderte Multiskalige Materialsysteme - M3 (192346071) (192346071)
3. DFG project 194651731 - EXC 1074: Hamburger Zentrum für ultraschnelle Beobachtung (CUI): Struktur, Dynamik und Kontrolle von Materie auf atomarer Skala (194651731) (194651731)
4. DFG project 390715994 - EXC 2056: CUI: Advanced Imaging of Matter (390715994) (390715994)

Experiment(s):

1. DESY NanoLab: Microscopy
2. DESY NanoLab: X-Ray Diffraction

Appears in the scientific report 2023

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Database coverage:
; ; ; Clarivate Analytics Master Journal List ; Current Contents - Physical, Chemical and Earth Sciences ; Essential Science Indicators ; IF >= 5 ; JCR ; National-Konsortium ; SCOPUS ; Science Citation Index Expanded ; Web of Science Core Collection

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