Research Article

|

2016, 9(5): 1366–1376

|

https://doi.org/10.1007/s12274-016-1032-y

Monodisperse hollow silica spheres: An in-depth scattering analysis

Pia Ruckdeschel1, Martin Dulle2, Tobias Honold3, Stephan Frster2, Matthias Karg3, and Markus Retsch1 (*)

View Author's information

1 Physical Chemistry 1 – Polymer Systems, University of Bayreuth, Universittsstr. 30, 95447 Bayreuth, Germany
2 Physical Chemistry 1, University of Bayreuth, Universittsstr. 30, 95447 Bayreuth, Germany
3 Physical Chemistry 1 – Colloidal Systems, University of Bayreuth, Universittsstr. 30, 95447 Bayreuth, Germany

Keywords: hollow sphere,silica nanoparticle,small angle X-ray scattering,light scattering,nanoscale characterization
Full article PDF
Cite this article(Endnote)
Share this article
Metric

views: 122

Citations: 0

  • Abstract
  • References
  • Electronic Supplementary Material
Herein, we fabricate hollow silica nanoparticles with exceptionally narrow sizedistributions that inherently possess two distinct length scales—tens of nanometerswith regards to the shell thickness, and hundreds of nanometers in regards to thetotal diameter. We characterize these structures using dynamic and static lightscattering (DLS and SLS), small angle X-ray scattering (SAXS), and transmissionelectron microscopy (TEM), and we demonstrate quantitative agreement amongall methods. The ratio between the radius of gyration (SLS) and hydrodynamicradius (DLS) in these particles equals almost unity, corresponding to ideal capsulebehavior. We are able to resolve up to 20 diffraction orders of the hollow sphereform factor in SAXS, indicating a narrow size distribution. Data from light andX-ray scattering can be combined to a master curve covering a q-range of fourorders of magnitude assessing all hierarchical length scales of the form factor.The measured SLS intensity profiles noticeably change when the scatteringcontrast between the interior and exterior is altered, whereas the SAXS intensityprofiles do not show any significant change. Tight control of the aforementionedlength scales in one simple and robust colloidal building block renders theseparticles suitable as future calibration standards.
Related Article
Cite this article

Monodisperse hollow silica spheres: An in-depth scattering analysis. Nano Res. 2016, 9(5): 1366–1376 https://doi.org/10.1007/s12274-016-1032-y

Download citation