Publications
Nanoparticle Assemblies as Probes for Self-Assembled Monolayer Characterization: Correlation between Surface Functionalization and Agglomeration Behavior
- Author(s)
- Bernhard Feichtenschlager, Silvia Pabisch, Herwig Peterlik, Guido Kickelbick
- Abstract
The ordering of dodecyl chains has been investigated in mixed monolayers of phosphonic acid capping agents on the surface of hydrothermally prepared zirconia nanocrystals. Methyl-, phenyl-, pyryl-, and tert-butylphosphonic acids have been used to investigate series with different mixing ratios with dodecylphosphonic acid as the cocapping agent for the mixed monolayer formation. Fourier transform infrared (FTIR) studies revealed that an increasing amount (different for each type) of coadsorbed capping agent reduces the ordering of the dodecyl chains significantly. Small-angle X-ray scattering (SAXS) verified that with increasing amount of cocapping agent the agglomeration of the particles decreases. The strong correlation of the agglomeration behavior with the ordering of the surface-bound alkyl chains leads to the conclusion that interparticle bilayers, formed via long alkyl chain packing, are responsible and can be controlled on a molecular level by coadsorbing various molecules. On the basis of this correlation, nanoparticles can be used as probes for self-assembled monolayer investigation by an indirect structural method (SAXS) and correlated with the routine spectroscopical method for the chemical analysis of surface groups (FTIR).
- Organisation(s)
- Dynamics of Condensed Systems
- External organisation(s)
- Technische Universität Wien, Universität des Saarlandes
- Journal
- Langmuir: the A C S journal of surfaces and colloids
- Volume
- 28
- Pages
- 741-750
- No. of pages
- 10
- ISSN
- 0743-7463
- DOI
- https://doi.org/10.1021/la2023067
- Publication date
- 2012
- Peer reviewed
- Yes
- Austrian Fields of Science 2012
- 103009 Solid state physics, 103015 Condensed matter, 103018 Materials physics
- Portal url
- https://ucrisportal.univie.ac.at/en/publications/nanoparticle-assemblies-as-probes-for-selfassembled-monolayer-characterization-correlation-between-surface-functionalization-and-agglomeration-behavior(0ab75fbe-9463-4652-ada7-eb86e59f0333).html