title: Platinum(II)-Crosslinked Single-Chain Nanoparticles: An Approach towards Recyclable Homogeneous Catalysts.
abstract: We introduce the synthesis and in-depth characterization of platinum(II)-crosslinked single-chain nanoparticles (PtII-SCNPs) to demonstrate their application as a recyclable homogeneous catalyst. Specifically, a linear precursor copolymer of styrene and 4-(diphenylphosphino)styrene was synthesized via nitroxide-mediated polymerization. The triarylphosphine ligand moieties along the backbone allowed for the intramolecular crosslinking of single chains via the addition of [Pt(1,5-cyclooctadiene)Cl2] in dilute solution. The successful formation of well-defined PtII-SCNPs was evidenced by size exclusion chromatography, dynamic light scattering, nuclear magnetic resonance (1H,31P{1H},195Pt), and diffusion-ordered spectroscopy. Finally, the activity of the PtII-SCNPs as homogeneous, yet recyclable catalyst was successfully demonstrated using the example of the amination of allyl alcohol.
authors.affiliation: Institute for Inorganic Chemistry, Karlsruher Institute of Technology (KIT), Engesserstrasse 15, 76131, Karlsruhe, Germany.
authors.forename: Nicolai D
authors.initials: ND
authors.lastname: Knöfel
authors.affiliation: Institut für Technische Chemie und Polymerchemie, Karlsruhe Institute of Technology (KIT), Engesserstrasse 18, 76131, Karlsruhe, Germany.|Institute for Biological Interfaces, Karlsruhe Institute of Technology (KIT), Hermann-von-Helmholtz-Platz 1, 76344, Eggenstein-Leopoldshafen, Germany.|School of Chemistry, Physics and Mechanical Engineering, Queensland University of Technology (QUT), 2 George Street, Brisbane, QLD 4001, Australia.
authors.forename: Hannah
authors.initials: H
authors.lastname: Rothfuss
authors.affiliation: Materials Research Laboratory (MRL), University of California, Santa Barbara, Santa Barbara, CA, 93106, USA.
authors.forename: Johannes
authors.initials: J
authors.lastname: Willenbacher
authors.affiliation: Institut für Technische Chemie und Polymerchemie, Karlsruhe Institute of Technology (KIT), Engesserstrasse 18, 76131, Karlsruhe, Germany.|Institute for Biological Interfaces, Karlsruhe Institute of Technology (KIT), Hermann-von-Helmholtz-Platz 1, 76344, Eggenstein-Leopoldshafen, Germany.|School of Chemistry, Physics and Mechanical Engineering, Queensland University of Technology (QUT), 2 George Street, Brisbane, QLD 4001, Australia.
authors.forename: Christopher
authors.identifier: 0000-0002-6745-0570
authors.initials: C
authors.lastname: Barner-Kowollik
authors.affiliation: Institute for Inorganic Chemistry, Karlsruher Institute of Technology (KIT), Engesserstrasse 15, 76131, Karlsruhe, Germany.
authors.forename: Peter W
authors.initials: PW
authors.lastname: Roesky
keywords: homogeneous catalysis; nanoparticles; platinum; recyclable catalysts; single-chain nanoparticles (SCNPs)