Title data
Haramagatti, Chandrashekara R. ; Schacher, Felix H. ; Müller, Axel H. E. ; Köhler, Jürgen:
Diblock copolymer membranes investigated by single-particle tracking.
In: Physical Chemistry Chemical Physics.
Vol. 13
(2011)
Issue 6
.
- pp. 2278-2284.
ISSN 1463-9084
DOI: https://doi.org/10.1039/C0CP01658F
Project information
Project title: |
Project's official title Project's id Complex Materials No information |
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Project financing: |
VolkswagenStiftung |
Abstract in another language
We report a study on particle diffusion in membranes formed from polystyrene-block-poly(2-(dimethylamino)ethyl methacrylate) (PS-b-PDMAEMA) diblock copolymers. The membranes were investigated by scanning electron microscopy and by single-particle tracking employing carboxy-functionalized polystyrene beads loaded with a fluorophore as spectroscopic probes. From the diffusion trajectories we extracted the domain size distribution of the membranes and the local diffusion coefficient of the beads as a function of the size of the beads. The single-particle tracking data revealed that the effective domain sizes of the membranes are reduced with respect to the domain sizes obtained from scanning electron microscopy, reflecting the confined diffusion of the probe particles due to interactions with the domain walls. This is corroborated by a clear correlation between the diffusion coefficient of an individual polystyrene bead and the size of the actual domain to which it is confined.
Further data
Item Type: | Article in a journal |
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Refereed: | Yes |
Institutions of the University: | Faculties > Faculty of Mathematics, Physics und Computer Science > Department of Physics > Chair Experimental Physics IX - Spectroscopy of Soft Matter > Chair Experimental Physics IX - Spectroscopy of Soft Matter - Univ.-Prof. Dr. Jürgen Köhler Faculties Faculties > Faculty of Mathematics, Physics und Computer Science Faculties > Faculty of Mathematics, Physics und Computer Science > Department of Physics Faculties > Faculty of Mathematics, Physics und Computer Science > Department of Physics > Chair Experimental Physics IX - Spectroscopy of Soft Matter |
Result of work at the UBT: | Yes |
DDC Subjects: | 500 Science > 530 Physics |
Date Deposited: | 11 Apr 2018 11:40 |
Last Modified: | 09 Sep 2020 09:00 |
URI: | https://eref.uni-bayreuth.de/id/eprint/43300 |