TY  - JOUR
AU  - Giuntini, Diletta
AU  - Davydok, Anton
AU  - Blankenburg, Malte
AU  - Domènech, Berta
AU  - Bor, Büsra
AU  - Li, Mingjing
AU  - Scheider, Ingo
AU  - Krywka, Christina
AU  - Mueller, Martin
AU  - Schneider, Gerold A.
TI  - Deformation Behavior of Cross-Linked Supercrystalline Nanocomposites: An in Situ SAXS/WAXS Study during Uniaxial Compression
JO  - Nano letters
VL  - 21
IS  - 7
SN  - 1530-6992
CY  - Washington, DC
PB  - ACS Publ.
M1  - PUBDB-2021-01808
SP  - 2891 - 2897
PY  - 2021
AB  - With the ever-expanding functional applications of supercrystalline nanocomposites (a relatively new category of materials consisting of organically functionalized nanoparticles arranged into periodic structures), it becomes necessary to ensure their structural stability and understand their deformation and failure mechanisms. Inducing the cross-linking of the functionalizing organic ligands, for instance, leads to a remarkable enhancement of the nanocomposites’ mechanical properties. It is however still unknown how the cross-linked organic phase redistributes applied loads, how the supercrystalline lattice accommodates the imposed deformations, and thus in general what phenomena govern the overall material’s mechanical response. This work elucidates these aspects for cross-linked supercrystalline nanocomposites through an in situ small- and wide-angle X-ray scattering study combined with uniaxial pressing. Because of this loading condition, it emerges that the cross-linked ligands effectively carry and distribute loads homogeneously throughout the nanocomposites, while the superlattice deforms via rotation, slip, and local defects generation.
LB  - PUB:(DE-HGF)16
C6  - pmid:33749275
UR  - <Go to ISI:>//WOS:000641160500026
DO  - DOI:10.1021/acs.nanolett.0c05041
UR  - https://bib-pubdb1.desy.de/record/457042
ER  -