Interpenetrated and Bridged Nanocylinders from Self-Assembled Star Block Copolymers

Autor(en)

Esmaeel Moghimi, Iurii Chubak, Konstantinos Ntetsikas, Georgios Polymeropoulos, Xin Wang, Consiglia Carillo, Antonia Statt, Luca Cipelletti, Kell Mortensen, Nikos Hadjichristidis, Athanassios Z. Panagiotopoulos, Christos N. Likos, Dimitris Vlassopoulos

Abstrakt

The design of functional polymeric materials with tunable response requires a synergetic use of macromolecular architecture and interactions. Here, we combine experiments with computer simulations to demonstrate how physical properties of gels can be tailored at the molecular level, using star block copolymers with alternating block sequences as a paradigm. Telechelic star polymers containing attractive outer blocks self-assemble into soft patchy nanoparticles, whereas their mirror-image inverted architecture with inner attractive blocks yields micelles. In concentrated solutions, bridged and interpenetrated hexagonally packed nanocylinders are formed, respectively, with distinct structural and rheological properties. The phase diagrams exhibit a peculiar re-entrance where the hexagonal phase melts upon both heating and cooling because of solvent-block and block-block interactions. The bridged nanostructure is characterized by similar deformability, extended structural coherence, enhanced elasticity, and yield stress compared to micelles or typical colloidal gels, which make them promising and versatile materials for diverse applications.

Organisation(en)

Computergestützte Physik und Physik der Weichen Materie

Externe Organisation(en)

Foundation for Research and Technology—Hellas (FORTH), University of Crete, CNRS Institut écologie et environnement, King Abdullah University for Science and Technology, University of Illinois at Urbana-Champaign, Laboratoire Charles Coulomb (L2C) CNRS, UMR 5221, Institut universitaire de France, University of Copenhagen, Princeton University

Journal

Macromolecules

Band

57

Seiten

926-939

Anzahl der Seiten

14

ISSN

0024-9297

DOI

https://doi.org/10.1021/acs.macromol.3c02088

Publikationsdatum

01-2024

Peer-reviewed

Ja

ÖFOS 2012

103023 Polymerphysik, 104011 Materialchemie

ASJC Scopus Sachgebiete

Organic Chemistry, Polymers and Plastics, Inorganic Chemistry, Materials Chemistry

Link zum Portal

https://ucrisportal.univie.ac.at/de/publications/af77beba-221f-4a27-96b5-c8dd65eb6095