Issue 28, 2021

Heterobimetallic Au(i)/Y(iii) single chain nanoparticles as recyclable homogenous catalysts

Abstract

Heterobimetallic single chain nanoparticles were synthesized and applied as recyclable homogenous catalysts. A terpolymer containing two orthogonal ligand moieties, phosphines and carboxylates, was obtained via nitroxide-mediated polymerization. Single chain nanoparticle (SCNP) formation is induced by selective metal complexation of Y(III) by the carboxylate functions, while Au(I) is selectively coordinated to phosphine moieties. In contrast to previous work, the two functionalities, SCNP folding and formation of a catalytic center, were distributed over two metals, which critically increases the flexibility of the system. The formation of Au(I)/Y(III)-SCNPs is evidenced by size exclusion chromatography, dynamic light scattering, nuclear magnetic resonance (1H, 31P{1H}) and infrared spectroscopy. Importantly, the activity of the Au(I)/Y(III)-SCNPs as homogenous, yet recyclable catalyst, bridging the gap between homogenous and heterogeneous catalysis, was demonstrated using the hydroamination of aminoalkynes as an example.

Graphical abstract: Heterobimetallic Au(i)/Y(iii) single chain nanoparticles as recyclable homogenous catalysts

Supplementary files

Article information

Article type
Paper
Submitted
22 Apr 2021
Accepted
17 Jun 2021
First published
28 Jun 2021
This article is Open Access
Creative Commons BY-NC license

Polym. Chem., 2021,12, 4016-4021

Heterobimetallic Au(I)/Y(III) single chain nanoparticles as recyclable homogenous catalysts

J. L. Bohlen, B. Kulendran, H. Rothfuss, C. Barner-Kowollik and P. W. Roesky, Polym. Chem., 2021, 12, 4016 DOI: 10.1039/D1PY00552A

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