Single-chain self-folding of synthetic polymers induced by metal-ligand complexation

Willenbacher, J., Altintas, O., Roesky, P. W., & Barner-Kowollik, C. (2014) Single-chain self-folding of synthetic polymers induced by metal-ligand complexation. Macromolecular Rapid Communications, 35(1).

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The controlled folding of a single polymer chain is for the first time realized by metal- complexation. α,ω-Bromine functional linear polymers are prepared via activators regenerated by electron transfer (ARGET) ATRP (M̄n,SEC = 5900 g mol-1, D strok sign = 1.07 and 12 000 g mol-1, D strok sign = 1.06) and the end groups of the polymers are subsequently converted to azide functionalities. A copper-catalyzed azide-alkyne cycloaddition (CuAAC) reaction is carried out in the presence of a novel triphenylphosphine ligand and the polymers to afford homotelechelic bis-triphenylphosphine polymeric-macroligands (MLs) (M̄n,SEC = 6600 g mol-1, D strok sign = 1.07, and 12 800 g mol-1, D strok sign = 1.06). Single-chain metal complexes (SCMCs) are formed in the presence of Pd(II) ions in highly diluted solution at ambient temperature. The results derived via 1H and 31P{1H} NMR experiments, SEC, and DLS unambiguously evidence the efficient formation of SCMCs via metal ligand complexation. © 2013 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.

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ID Code: 99414
Item Type: Journal Article
Refereed: Yes
Additional Information: Cited By :19
Export Date: 5 September 2016
Correspondence Address: Barner-Kowollik, C.; Preparative Macromolecular Chemistry, Institut für Technische Chemie und Polymerchemie, Karlsruhe Institute of Technology (KIT), Engesserstr. 18, 76128 Karlsruhe, Germany; email:
Chemicals/CAS: azide, 12596-60-0, 14343-69-2; copper, 15158-11-9, 7440-50-8
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Keywords: macroligands, metal complexes, single-chain folding, synthetic proteins, Activators regenerated by electron transfers, Azide-alkyne cycloaddition, Macro ligand, Metal-ligand complexation, Single polymer chains, Synthetic protein, Triphenylphosphine ligands, Chains, Ligands, Nuclear magnetic resonance spectroscopy, Polymers, alkyne, azide, copper, ligand, polymer, article, catalysis, chemistry, cyclization, gel chromatography, Alkynes, Azides, Chromatography, Gel, Magnetic Resonance Spectroscopy
DOI: 10.1002/marc.201300594
ISSN: 10221336
Divisions: Current > Schools > School of Chemistry, Physics & Mechanical Engineering
Current > Institutes > Institute for Future Environments
Current > QUT Faculties and Divisions > Science & Engineering Faculty
Deposited On: 22 Sep 2016 04:50
Last Modified: 28 Sep 2016 01:19

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