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Electric Field Induced Gyroid-to-Cylinder Transitions in Concentrated Diblock Copolymer Solutions

Titelangaben

Schmidt, Kristin ; Pester, Christian W. ; Schoberth, Heiko G. ; Zettl, Heiko ; Schindler, Kerstin A. ; Böker, Alexander:
Electric Field Induced Gyroid-to-Cylinder Transitions in Concentrated Diblock Copolymer Solutions.
In: Macromolecules. Bd. 43 (11 Mai 2010) Heft 9 . - S. 4268-4274.
ISSN 0024-9297
DOI: https://doi.org/10.1021/ma100278q

Volltext

Link zum Volltext (externe URL): Volltext

Abstract

Block copolymers show a variety of microdomain structures due to their ability to phase separate. The bicontinuous gyroid phase and its behavior under the influence of external fields are particularly interesting with regard to technological applications. In this paper, we studied the behavior of a gyroid-forming block copolymer solution under the influence of an external electric field. As a model system, we used a solution of polystyrene-b-polyisoprene in toluene. We will show that the gyroid phase can be aligned by a moderate electric field and can be forced to undergo a phase transition to the cylindrical phase under a sufficiently high electric field. This process is reversible, and the cylinders immediately reconnect after the electric field is switched off, generating a highly aligned gyroid phase.Block copolymers show a variety of microdomain structures due to their ability to phase separate. The bicontinuous gyroid phase and its behavior under the influence of external fields are particularly interesting with regard to technological applications. In this paper, we studied the behavior of a gyroid-forming block copolymer solution under the influence of an external electric field. As a model system, we used a solution of polystyrene-b-polyisoprene in toluene. We will show that the gyroid phase can be aligned by a moderate electric field and can be forced to undergo a phase transition to the cylindrical phase under a sufficiently high electric field. This process is reversible, and the cylinders immediately reconnect after the electric field is switched off, generating a highly aligned gyroid phase.

Weitere Angaben

Publikationsform: Artikel in einer Zeitschrift
Begutachteter Beitrag: Ja
Institutionen der Universität: Fakultäten > Fakultät für Biologie, Chemie und Geowissenschaften > Fachgruppe Chemie > Lehrstuhl Physikalische Chemie II
Forschungseinrichtungen > Sonderforschungsbereiche, Forschergruppen > SFB 481 Komplexe Makromolekül- und Hybridsysteme in inneren und äußeren Feldern
Fakultäten
Fakultäten > Fakultät für Biologie, Chemie und Geowissenschaften
Fakultäten > Fakultät für Biologie, Chemie und Geowissenschaften > Fachgruppe Chemie
Forschungseinrichtungen
Forschungseinrichtungen > Sonderforschungsbereiche, Forschergruppen
Titel an der UBT entstanden: Ja
Themengebiete aus DDC: 500 Naturwissenschaften und Mathematik > 530 Physik
500 Naturwissenschaften und Mathematik > 540 Chemie
Eingestellt am: 14 Mär 2016 08:13
Letzte Änderung: 19 Apr 2016 12:46
URI: https://eref.uni-bayreuth.de/id/eprint/31710