Journal Article

PUBDB-2023-03912

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png Revealing the Impact of Polystyrene Functionalization of Au Octahedral Nanocrystals of Different Sizes on the Formation and Structure of Mesocrystals

Lapkin, D.XFEL.EU*DESY* ; Singh, S.CFEL*DESY* ; Kirner, F.Extern* ; Sturm, S.Extern* ; Assalauova, D.Extern*XFEL.EU*DESY* ; Ignatenko, A.CFEL*XFEL.EU*DESY* ; Wiek, T. ; Gemming, T. ; Lubk, A. ; Müller-Caspary, K. ; Khadiev, A.DESY* ; Novikov, D.DESY* ; Sturm, E. (Corresponding author)Extern* ; Vartaniants, I. (Corresponding author)XFEL.EU*DESY*

2023
Wiley Weinheim

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Please use a persistent id in citations: doi:10.1002/cnma.202300336  doi:10.3204/PUBDB-2023-03912

Abstract: The self-assembly of anisotropic nanocrystals (stabilized by organic capping molecules) with pre-selected composition, size, and shape allows for the creation of nanostructured materials with unique structures and features. For such a material, the shape and packing of the individual nanoparticles play an important role. This work presents a synthesis procedure for ω-thiol-terminated polystyrene (PS-SH) functionalized gold nanooctahedra of variable size (edge length 37, 46, 58, and 72 nm). The impact of polymer chain length (Mw: 11k, 22k, 43k, and 66k g⋅mol$^{−1}$) on the growth of colloidal crystals (e. g. mesocrystals) and their resulting crystal structure is investigated. Small-angle X-ray scattering (SAXS) and scanning transmission electron microscopy (STEM) methods provide a detailed structural examination of the self-assembled faceted mesocrystals based on octahedral gold nanoparticles of different size and surface functionalization. Three-dimensional angular X-ray cross-correlation analysis (AXCCA) enables high-precision determination of the superlattice structure and relative orientation of nanoparticles in mesocrystals. This approach allows us to perform non-destructive characterization of mesocrystalline materials and reveals their structure with resolution down to the nanometer scale.

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Contributing Institute(s):

1. FS-Photon Science (FS-PS)
2. Experimentebetreuung PETRA III (FS-PET-D)
3. DOOR-User (DOOR ; HAS-User)

Research Program(s):

1. 632 - Materials – Quantum, Complex and Functional Materials (POF4-632) (POF4-632)
2. 6G3 - PETRA III (DESY) (POF4-6G3) (POF4-6G3)
3. SFB 1214 B01 - Mesokristalle: Bildung, Struktur und Eigenschaften (B01) (313082588) (313082588)

Experiment(s):

1. PETRA Beamline P23 (PETRA III)

Appears in the scientific report 2023

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

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