Multi-stimuli-responsive magnetic assemblies as tunable releasing carriers.

A novel approach has been developed to prepare the magnetic micelles. Polyethylene glycol (PEG) and poly(N-isopropylacrylamide) (PNIPAM) are firstly attached on the surface of the magnetic nanoparticle via the host-guest inclusion between ferrocene groups (Fc) and β-cyclodextrin (β-CD). Then the resulting MNPs became amphiphilic in water above the LCST of PNIPAM and self-assembled into magnetomicelles with a size of 250 nm.

An efficient multiple healing conductive composite via host-guest inclusion.

A self-healable conductive composite is developed by combining the small molecules and nanotubes through host-guest interactions. This material shows uniform conductivity, microwave absorption and humidity sensing properties, and can be rapidly healed to over 90% electrical and mechanical properties with the aid of water multiple times. In addition, the produced material is also remouldable and recyclable.

Preparation of thermosensitive polymer magnetic particles and their application in protein separations.

This paper presents a kind of thermoresponsive polymeric magnetic particles for protein separations. The magnetofluids were directly encapsulated in hollow particles constructed by self-assembly of rod-coil poly(ethylene glycol)-poly(N-isopropylacrylamide)/α-cyclodextrin (PEG-PNIPAM/α-CD) complexes. The resulting particles showed reversible protein absorption/desorption capacity because the reversible thermo-sensitivity of PNIPAM.