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Telechelic Star Polymers as Self-Assembling Units from the Molecular to the Macroscopic Scale

Autor(en)
Barbara Capone, Ivan Coluzza, Federica LoVerso, Christos Likos, Ronald Blaak
Abstrakt

By means of multiscale molecular simulations, we show that telechelic-star polymers are a simple, robust, and tunable system, which hierarchically self-assembles into soft-patchy particles and mechanically stabilizes selected, open crystalline structures. The self-aggregating patchy behavior can be fully controlled by the number of arms per star and by the fraction of attractive monomeric units at the free ends of the arms. Such self-assembled soft-patchy particles while forming, upon augmenting density, gel-like percolating networks, preserve properties as particle size, number, and arrangement of patches per particle. In particular, we demonstrate that the flexibility inherent in the soft-patchy particles brings forward a novel mechanism that leads to the mechanical stability of diamond and simple cubic crystals over a wide range of densities, and for molecular sizes ranging from about 10 nm up to the micrometer scale.

Organisation(en)
Computergestützte Physik und Physik der Weichen Materie
Externe Organisation(en)
Johannes Gutenberg-Universität Mainz
Journal
Physical Review Letters
Band
109
Anzahl der Seiten
5
ISSN
0031-9007
DOI
https://doi.org/10.1103/PhysRevLett.109.238301
Publikationsdatum
2012
Peer-reviewed
Ja
ÖFOS 2012
103002 Akustik
Link zum Portal
https://ucrisportal.univie.ac.at/de/publications/65b346a7-81ec-42d8-8038-a9b6f742386f