Christophe Deraedt

Multifunctional Redox Polymers: Electrochrome, Polyelectrolyte, Sensor, Electrode Modifier, Nanoparticle Stabilizer, and Catalyst Template

Simple click polycondensation metallopolymers of redox-robust bis(ethynyl)biferrocene (biFc) and di(azido) poly(ethylene glycol) (PEG400 and PEG1000) were designed for multiple functions including improvement of water solubility and biocompatibility, the introduction of mixed valency and sensing capabilities, and as nanoparticle stabilizers for catalysis.

Robust, Efficient, and Recyclable Catalysts from the Impregnation of Preformed Dendrimers Containing Palladium Nanoparticles on a Magnetic Support

The simple impregnation of γ‐Fe2O3(core)/SiO2(shell) magnetic nanoparticles with a dendrimer that contains stabilized Pd nanoparticles is presented as a new method to produce highly efficient heterogeneous catalysts. This technique provides much better stability, recyclability, and activity in Cuf8ffC cross‐coupling reactions and selective oxidation of benzyl alcohol to benzaldehyde in water than unsupported Pd nanoparticles.

Catalytically-Active Palladium Nanoparticles Stabilized by Triazolylbiferrocenyl-Containing Polymers

Four different triazolylbiferrocenyl-containing polymers were used for the stabilization of palladium nanoparticles (PdNPs) upon reducing triazole-coordinated Pd(II) both in organic solvents and in water. The resulting PdNPs were active in the Suzuki–Miyaura coupling of bromoaromatics even with down to only 20xa0ppm of Pd. The comparison between the four different polymer-stabilized PdNPs allows concluding that a flexible polyethylene glycol moiety in the linear triazolylbiferrocenyl polymer permits a better stabilization of the PdNPs than polymers containing triazolylbiferrocenyl side chains with a rigid styrene or succinimide moieties.