Nanoparticle agglomeration induced by temperature-driven phase transition of the stabilising ligand shell and preferential solvent de-mixing
Colloidal stability of non-polar metal nanoparticles is an important question in many industrial applications. However, it is not well understood because DLVO theory does not apply, making these systems also interesting from a fundamental point of view. Combined investigations by SAXS and MD simulation give strong evidence that under certain conditions a disorder to order phase transition within the ligand shell, stabilising the nanoparticles, promotes particle agglomeration. Due to the weak contrast in electron densities between ligand shell and surrounding solvent this cannot be addressed by X-ray scattering. We therefore propose SANS experiments on previously well characterised nanoparticle dispersions with different particle diameters and solvent compositions, exploiting different deuteration schemes to simultaneously access ligand shell structure and agglomeration properties of the systems.
Please note that you will need to login with your ILL credentials to download the data.
Download DataThe recommended format for citing this dataset in a research publication is in the following format:
KUTTICH Bjorn; KRAUS Tobias; NIEBUUR Bart-Jan; PYTTLIK Andrea; SCHWEINS Ralf; SIEBRECHT Martin and ZIMMERMANN Anna. (2021). Nanoparticle agglomeration induced by temperature-driven phase transition of the stabilising ligand shell and preferential solvent de-mixing. Institut Laue-Langevin (ILL) doi:10.5291/ILL-DATA.9-10-1690
ILL has partnered with DataCite as the registration agency
for data persistent identifiers.