NDLI: Soft self-assembled nanoparticles with temperature-dependent properties

Content Provider	Royal Society of Chemistry (RSC)
Author	Rovigatti, Lorenzo Capone, Barbara Likos, Christos N.
Copyright Year	2016
Abstract	The fabrication of versatile building blocks that reliably self-assemble into desired ordered and disordered phases is amongst the hottest topics in contemporary materials science. To this end, microscopic units of varying complexity, aimed at assembling the target phases, have been thought, designed, investigated and built. Such a path usually requires laborious fabrication techniques, especially when specific functionalisation of the building blocks is required. Telechelic star polymers, i.e., star polymers made of a number of f di-block copolymers consisting of solvophobic and solvophilic monomers grafted on a central anchoring point, spontaneously self-assemble into soft patchy particles featuring attractive spots (patches) on the surface. Here we show that the tunability of such a system can be widely extended by controlling the physical and chemical parameters of the solution. Indeed, under fixed external conditions the self-assembly behaviour depends only on the number of arms and on the ratio of solvophobic to solvophilic monomers. However, changes in temperature and/or solvent quality make it possible to reliably change the number and size of the attractive patches. This allows the steering of the mesoscopic self-assembly behaviour without modifying the microscopic constituents. Interestingly, we also demonstrate that diverse combinations of the parameters can generate stars with the same number of patches but different radial and angular stiffness. This mechanism could provide a neat way of further fine-tuning the elastic properties of the supramolecular network without changing its topology.
Starting Page	3288
Ending Page	3295
Page Count	8
File Format	HTM / HTML PDF
ISSN	20403364
Volume Number	8
Issue Number	6
Journal	Nanoscale
DOI	10.1039/c5nr04661k
Language	English
Publisher	Royal Society of Chemistry
Access Restriction	Open
Subject Keyword	Self-assembly Network topology Telechelic polymer Materials science Solvophobic Stiffness Solvent
Content Type	Text
Resource Type	Article
Subject	Nanoscience and Nanotechnology

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