The temperature response of micellar aggregates of poly(n-butyl acrylate)-b-poly(N-isopropylacrylamide)-carboxylic acid (PnBA-b-PNIPAM-COOH) end-functionalized diblock copolymers in aqueous solutions is investigated by small angle neutron scattering and light scattering techniques. The particular micellar aggregates present -COOH groups at their surface due to the molecular architecture of the ...

Frontal polymerization has been successfully used to synthesize poly(N-isopropylacrylamide) nanocomposite hydrogels containing graphene. The latter was directly achieved by ultrasound treatment of a dispersion of graphite inN-methylpyrrolidone. The dispersion, having the concentration of 2.21 g L , was characterized by TEM analysis and mixed with suitable amounts of N-isopropylacrylamide for th...

Covalently functionalized multi-walled carbon nanotubes (MWNTs) were prepared by grafting well-defined thermo-responsive poly(N-isopropylacrylamide) (PNIPAM) via click reactions. First, azide-terminated poly(N-isopropylacrylamide) (N3-PNIPAM) was synthesized by reversible addition fragmentation chain-transfer (RAFT) polymerization, and then the N₃-PNIPAM moiety was connected onto MWNTs by click...

Despite numerous studies emphasizing the plasmonic impact on fluorescence, design of a dynamic system allowing on-demand fluorescence switching in single nanostructure remains challenging. The reversibility and versatility approach, particular its compatibility with wide range nanoparticles fluorophores, are among main experimental difficulties. In this work, we achieve reversible by coupling m...

objective(s): nowadays hydrogels are one of the upcoming classes of polymer-based controlled-release drug delivery systems. temperature and ph-responsive delivery systems have drawn much attention because some diseases reveal themselves by a change in temperature and/or ph. the objective of this work is to prepare and characterize composite membrane using responsive nanoparticles into a polymer...

We describe the surface modification of magnetic nanoparticles (MNPs), the coverage of poly(N-isopropylacrylamide) (PNiPAM) microgel with the MNPs and the inductive heating of these carriers. PNiPAM surface itself was modified using the layer-by-layer (LbL) assembly of polyelectrolytes to facilitate the deposition of surface-modified MNPs. One advantage of this concept is it allows the tuning o...

We report the effects of the swell-to-collapse transition on the electrochemical and electrochemiluminescence (ECL) properties of thermoresponsive pNIPAM films incorporating covalently-attached Ru(bpy)32+ luminophores. Upon the collapse of the film, the number of electrochemically-active Ru(bpy)32+ centers increases, due to the reduced distance between adjacent redox centers. To generate ECL, c...

Thermally responsive Poly(N-isopropylacrylamide) co-allylamine (PNIPAM-co-ALA) nano-gels were synthesised and grafted onto non-woven polypropylene. Silver nitrate was incorporated into the nano-gels in their expanded state and their antimicrobial properties tested. Bacterial growth was measured before and after the Lower Critical Solution Temperature. Below the LCST, bacteria grew, above the LC...