Self-assembly is emerging as a superior method to prepare adaptive and responsive nanomaterials. In this contribution we report a soft hybrid material composed of superparamagnetic nanoparticles and cyclodextrin vesicles which self-assemble in microscale linear aggregates in aqueous solution under the influence of a magnetic field. The metastable linear aggregates can be stabilized by a noncovalent and photoresponsive cross-linker, which can be photoisomerized between an adhesive and a nonadhesive configuration. Thus, the hybrid material responds to magnetic field as well as to light and a stable self-assembled structure can only be obtained in a magnetic field in the presence of the noncovalent cross-linker. We have recently extended this strategy to the dynamic assembly of superparamagnetic nanoparticles modified with cyclodextrin. These hybrid nanoparticles can be further functionalized using host guest interaction and molecular recognition.

Self-assembly of hybrid nanoparticles directed by light and magnetic field

248th National Meeting (2014)

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