| Title: |
Revealing the Impact of Polystyrene Functionalization of Au Octahedral Nanocrystals of Different Sizes on the Formation and Structure of Mesocrystals |
| Authors: |
Lapkin, Dmitry; Singh, Shweta; Khadiev, Azat; Novikov, Dmitri; Sturm, Elena; Vartaniants, Ivan; Kirner, Felizitas; Sturm, Sebastian; Assalauova, Dameli; Ignatenko, Alexandr; Wiek, Thomas; Gemming, Thomas; Lubk, Axel; Müller-Caspary, Knut |
| Source: |
ChemNanoMat 9(12), e202300336 (2023). doi:10.1002/cnma.202300336 |
| Publisher Information: |
Wiley |
| Publication Year: |
2023 |
| Collection: |
DESY Publication Database (PUBDB) |
| Subject Terms: |
info:eu-repo/classification/ddc/620 |
| Subject Geographic: |
DE |
| Description: |
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. |
| Document Type: |
article in journal/newspaper |
| Language: |
English |
| ISSN: |
2199-692X |
| Relation: |
info:eu-repo/semantics/altIdentifier/issn/2199-692X; info:eu-repo/semantics/altIdentifier/wos/WOS:001119462900001 |
| Availability: |
https://bib-pubdb1.desy.de/record/586433; https://bib-pubdb1.desy.de/search?p=id:%22PUBDB-2023-03912%22 |
| Rights: |
info:eu-repo/semantics/openAccess |
| Accession Number: |
edsbas.C1031CF4 |
| Database: |
BASE |