Tuning the hydrophilicity of gold nanoparticles templated in star block copolymers |
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| Authors: | Fustin Charles-André Colard Catheline Filali Mariam Guillet Pierre Duwez Anne-Sophie Meier Michael A R Schubert Ulrich S Gohy Jean-François |
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| Institution: | Unité de Chimie des Matériaux Inorganiques et Organiques (CMAT) and Research Center in Micro- and Nano-Materials and Electronic Devices (CeRMiN), Université catholique de Louvain, Place Pasteur 1, 1348 Louvain-la-Neuve, Belgium. |
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| 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. |
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