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Shear‐Induced Orientation of Gyroid PS‐ b ‐P4VP(PDP) Supramolecules
Author(s) -
Vukovic Ivana,
Friedrich Heiner,
Merino Daniel Hermida,
Portale Giuseppe,
ten Brinke Gerrit,
Loos Katja
Publication year - 2013
Publication title -
macromolecular rapid communications
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.348
H-Index - 154
eISSN - 1521-3927
pISSN - 1022-1336
DOI - 10.1002/marc.201300326
Subject(s) - gyroid , shearing (physics) , materials science , copolymer , amphiphile , supramolecular chemistry , polystyrene , template , composite material , crystallography , nanotechnology , chemistry , crystal structure , polymer
The phase behavior of block copolymer based supramolecular complexes polystyrene‐ block ‐poly(4‐vinylpyridine) (PS‐ b ‐P4VP) and amphiphilic pentadecylphenol (PDP) molecules resembles the phase behavior of conventional block copolymers. Several PS‐ b ‐P4VP(PDP) complexes are found to self‐assemble into gyroid nanostructures. Typically, the grains are randomly oriented with a maximal size of several micrometers. Here, the orientation of a gyroid PS‐ b ‐P4VP(PDP) complex upon shearing is reported. It is found that the (111) gyroid lattice direction orients parallel to the shear direction after only several seconds of large amplitude oscillatory shearing. Oriented gyroid complexes can be used as templates for the preparation of metal nanofoams with improved ordering with potentially superior properties.