Self-assembly of polymers or copolymers and ferrofluids leading to either 1-d, 2-d or 3-d aggregates decorated with magnetic nanoparticles

TL;DR

This paper introduces hybrid colloids formed by combining magnetic ferrofluids with polymeric systems, resulting in 1D, 2D, or 3D aggregates decorated with magnetic nanoparticles, with potential applications in responsive materials.

Contribution

It presents a novel hybrid colloid system integrating magnetic nanoparticles with pH-sensitive polymer structures, enabling controlled self-assembly into various dimensional aggregates.

Findings

Successful synthesis of magnetic nanoparticle-polymer hybrids

Formation of 1D, 2D, and 3D aggregates with magnetic decoration

Responsive behavior to pH and magnetic fields

Abstract

A novel type of hybrid colloids is presented, based on the association of several polymeric systems and ferrofluids. On the one hand, we use inorganic nanoparticles made of magnetic iron oxide prepared at the LI2C, which response to a magnetic field of low intensity. On the other hand the organic part is made either of long linear polyacrylamide chains or of mesoscopic structures (vesicles and micelles) self-assembled from amphiphile polybutadiene-b-poly(glutamic acid) di-block copolymers, which conformation is pH-sensitive.