تقرير
Revealing the impact of polystyrene-functionalization of Au octahedral nanocrystals of different sizes on formation and structure of mesocrystals
| العنوان: | Revealing the impact of polystyrene-functionalization of Au octahedral nanocrystals of different sizes on formation and structure of mesocrystals |
|---|---|
| المؤلفون: | Lapkin, Dmitry, Singh, Shweta, Kirner, Felizitas, Sturm, Sebastian, Assalauova, Dameli, Ignatenko, Alexandr, Wiek, Thomas, Gemming, Thomas, Lubk, Axel, Müller-Caspary, Knut, Khadiev, Azat, Novikov, Dmitri, Sturm, Elena V., Vartanyants, Ivan A. |
| سنة النشر: | 2023 |
| المجموعة: | Condensed Matter |
| مصطلحات موضوعية: | Condensed Matter - Materials Science, Condensed Matter - Mesoscale and Nanoscale Physics |
| الوصف: | 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 {\omega}-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) 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. Comment: 46 pages, 5 figures, 12 Supplementary Information figures, 1 Table in the main text, 1 Table in Supplementary Information |
| نوع الوثيقة: | Working Paper |
| URL الوصول: | http://arxiv.org/abs/2306.14507 |
| رقم الأكسشن: | edsarx.2306.14507 |
| قاعدة البيانات: | arXiv |
| الوصف غير متاح. |