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A nanopatterned dual reactive surface driven by block copolymer self-assembly

Abstract : Herein, we report the selective functionalization of nano-domains obtained by the self-assembly of a polystyrene-block-poly(vinyl benzyl azide) PS-b-PVBN3 copolymer synthesized in three steps. First, a polystyrene macro-initiator was synthesized, and then extended with vinyl benzyl chloride by nitroxide mediated polymerization to form polystyrene-block-poly(vinyl benzyl chloride) PS-b-PVBC. Nucleophilic substitution of vinyl benzyl chloride into a vinyl benzyl azide moiety is finally performed to obtain PS-b-PVBN3 which self-assembled into nano-domains of vinyl benzyl azide PVBN3. Click chemistry was then used to bind functional gold nanoparticles and poly(N-isopropylacrylamide) (PNIPAM) on PVBN3 domains due to the specific anchoring at the surface of the nanopatterned film. Atomic force microscopy (AFM) was used to observe the block copolymer self-assembly and the alignment of the gold nanoparticles at the surface of the PVBN3 nanodomains. Thorough X-ray photoelectron spectroscopy (XPS) analysis of the functional film showed evidence of the sequential grafting of nanoparticles and PNIPAM. The hybrid surface expresses thermo-responsive properties and serves as a pattern to perfectly align and control the assembly of inorganic particles at the nanoscale.
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https://hal-univ-pau.archives-ouvertes.fr/hal-02557783
Contributor : Laurent Billon <>
Submitted on : Tuesday, April 28, 2020 - 11:29:06 PM
Last modification on : Friday, May 1, 2020 - 1:27:53 AM

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Coste Mawele Loudy, Joachim Allouche, Antoine Bousquet, Hervé Martinez, Laurent Billon. A nanopatterned dual reactive surface driven by block copolymer self-assembly. Nanoscale, Royal Society of Chemistry, 2020, 12 (14), pp.7532-7537. ⟨10.1039/C9NR10740A⟩. ⟨hal-02557783⟩

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