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Metallo-supramolecular hydrogels based on copolymers bearing terpyridine side-chain ligands

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Jochum, Florian Daniel [UCL] Brassinne, Jérémy [UCL] Fustin, Charles-André [UCL] Gohy, Jean-François [UCL]

A well-defined amphiphilic poly(triethyleneglycol methylether methacrylate)-block-polystyrene (PTEGMAb-PS) block copolymer with terpyridine groups randomly distributed within the water-soluble block has been sequentially synthesized by reversible addition-fragmentation chain transfer (RAFT) polymerization. Its self-assembly into micellar structures was analyzed in dilute aqueous solution by dynamic light scattering measurements (DLS). Metallo-supramolecular hydrogels were obtained after the addition of Ni(II) ions to either the precursor PTEGMA homopolymer solution or the PTEGMA-b-PS micellar solution. The PTEGMA-b-PS micelles formed gels at a much lower concentration than the corresponding PTEGMA homopolymer, thus evidencing the influence of the hydrophobic PS block on the critical gelation concentration. The mechanical properties of both hydrogels were finally investigated by rotational rheometry.

Document type Article de périodique (Journal article) – Article de recherche
Access type Accès libre
Publication date 2013
Language Anglais
Journal information "Soft Matter" - Vol. 9, p. 2314-2320 (January 2013)
Peer reviewed yes
Publisher Royal Society of Chemistry (Cambridge UK)
issn 1744-683X
e-issn 1744-6848
Publication status Publié
Affiliation UCL - SST/IMCN/BSMA - Bio and soft matter
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Bibliographic reference Jochum, Florian Daniel ; Brassinne, Jérémy ; Fustin, Charles-André ; Gohy, Jean-François. Metallo-supramolecular hydrogels based on copolymers bearing terpyridine side-chain ligands. In: Soft Matter, Vol. 9, p. 2314-2320 (January 2013)
Permanent URL http://hdl.handle.net/2078.1/128532