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Title

Tunable slow dynamics in a new class of soft colloids

AuthorsMoreno Segurado, Ángel J. CSIC ORCID ; Lo Verso, Federica; Pomposo, José A. CSIC ORCID; Colmenero de León, Juan CSIC ORCID
Issue Date2017
Citation8th International Discussion Meeting on Relaxations in Complex Systems (2017)
AbstractBy means of extensive monomer-resolved simulations, we investigate concentrated solutions of globular single-chain polymer nanoparticles (SCNPs), an emergent class of synthetic soft nano-objects. By increasing the concentration, the SCNPs show flattening and reentrant behaviour in the density dependence of their structural and dynamic correlations, as well as a soft caging regime and weak dynamic heterogeneity. The latter is confirmed by validation of the Stokes¿Einstein relation up to concentrations far beyond the overlap density. Therefore SCNPs arise as a new class of soft colloids, exhibiting slow dynamics and actualizing in a real system (the macromolecular architecture has been explicitly simulated) the static and dynamic anomalies proposed by models of single ultrasoft particles. Quantitative differences in the dynamic behaviour depend on the SCNP deformability, which can be tuned through the degree of internal cross-linking.
DescriptionResumen del trabajo presentado al 8th International Discussion Meeting on Relaxations in Complex Systems: "New results, Directions and Opportunities", celebrado en Wisla (Polonia) del 23 al 28 de julio de 2017.
URIhttp://hdl.handle.net/10261/179280
Appears in Collections:(CFM) Comunicaciones congresos
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