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Reversible tuning of a block-copolymer nanostructure via electric fields

Title data

Schmidt, Kristin ; Schoberth, Heiko G. ; Ruppel, Markus ; Zettl, Heiko ; Hänsel, Helmut ; Weiss, Thomas M. ; Urban, Volker S. ; Krausch, Georg ; Böker, Alexander:
Reversible tuning of a block-copolymer nanostructure via electric fields.
In: Nature Materials. Vol. 7 (2007) Issue 2 . - pp. 142-145.
ISSN 1476-4660
DOI: https://doi.org/10.1038/nmat2068

Official URL: Volltext

Abstract in another language

Block copolymers consisting of incompatible components self-assemble into microphase-separated domains yielding highly regular structures with characteristic length scales of the order of several tens of nanometres. Therefore, in the past decades, block copolymers have gained considerable potential for nanotechnological applications, such as in nanostructured networks and membranes, nanoparticle templates and high-density data storage media. However, the characteristic size of the resulting structures is usually determined by molecular parameters of the constituent polymer molecules and cannot easily be adjusted on demand. Here, we show that electric d.c. fields can be used to tune the characteristic spacing of a block-copolymer nanostructure with high accuracy by as much as 6% in a fully reversible way on a timescale in the range of several milliseconds. We discuss the influence of various physical parameters on the tuning process and study the time response of the nanostructure to the applied field. A tentative explanation of the observed effect is given on the basis of anisotropic polarizabilities and permanent dipole moments of the monomeric constituents. This electric-field-induced effect further enhances the high technological potential of block-copolymer-based soft-lithography applications

Further data

Item Type: Article in a journal
Refereed: Yes
Institutions of the University: Faculties > Faculty of Biology, Chemistry and Earth Sciences > Department of Chemistry > Chair Physical Chemistry II
Faculties
Faculties > Faculty of Biology, Chemistry and Earth Sciences
Faculties > Faculty of Biology, Chemistry and Earth Sciences > Department of Chemistry
Result of work at the UBT: Yes
DDC Subjects: 500 Science > 530 Physics
500 Science > 540 Chemistry
Date Deposited: 04 Mar 2016 07:54
Last Modified: 08 May 2020 09:54
URI: https://eref.uni-bayreuth.de/id/eprint/31342