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Diblock copolymer membranes investigated by single-particle tracking

DOI zum Zitieren der Version auf EPub Bayreuth: https://doi.org/10.15495/EPub_UBT_00004784
URN to cite this document: urn:nbn:de:bvb:703-epub-4784-5

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 1463-9076
DOI der Verlagsversion: https://doi.org/10.1039/c0cp01658f

Format:	PDF
Name:	c0cp01658f.pdf
Version:	Published Version
Available under License	German copyright law. This contribution is freely accessible with the consent of the copyright holder on the basis of an (DFG-funded) alliance or national license. The document may be used free of charge for personal use. In addition, the reproduction, editing, distribution and any kind of exploitation require the written consent of the respective rights holder.

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Project information

Project title:	Project's official title Project's id Complex Materials No information
Project financing:	VolkswagenStiftung

Abstract

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
Additional notes (visible to public):	ISI:000286628200043
DDC Subjects:	500 Science > 530 Physics 500 Science > 540 Chemistry
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
Language:	English
Originates at UBT:	Yes
URN:	urn:nbn:de:bvb:703-epub-4784-5
Date Deposited:	09 Sep 2020 08:59
Last Modified:	09 Sep 2020 08:59
URI:	https://epub.uni-bayreuth.de/id/eprint/4784

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