Skip to Content
Merck
  • Tuning the hydrophilicity of gold nanoparticles templated in star block copolymers.

Tuning the hydrophilicity of gold nanoparticles templated in star block copolymers.

Langmuir : the ACS journal of surfaces and colloids (2006-07-13)
Charles-André Fustin, Catheline Colard, Mariam Filali, Pierre Guillet, Anne-Sophie Duwez, Michael A R Meier, Ulrich S Schubert, Jean-François Gohy
ABSTRACT

We report on a simple procedure to tune the hydrophilicity of hybrid gold nanoparticles. The nanoparticles have been prepared in the core of a poly(ethylene glycol)-block-poly(epsilon-caprolactone) (PEG-b-PCL) five-arm star block copolymer. A hydrophilic corona was then added to these hybrid gold nanoparticles by direct chemisorption of trithiocarbonate-containing poly(acrylic acid) chains. These polymers were synthesized by RAFT polymerization with a trithiocarbonate as the chain-transfer agent. The efficiency of the grafting was evidenced by TEM, AFM, and DLS and by the successful transfer of these nanoparticles from organic solvent to water.

MATERIALS
Product Number
Brand
Product Description

Sigma-Aldrich
Carbon disulfide, ACS reagent, ≥99.9%
Sigma-Aldrich
Carbon disulfide, suitable for HPLC, ≥99.9%
Sigma-Aldrich
Carbon disulfide, suitable for IR spectroscopy, puriss. p.a., ACS reagent, reag. Ph. Eur., ≥99.9% (GC)