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Issue 25, 2019
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Hydrogenation of hydrophobic substrates catalyzed by gold nanoparticles embedded in Tetronic/cyclodextrin-based hydrogels

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Abstract

Hydrogenation of alkenes, alkynes and aldehydes was investigated under biphasic conditions using Au nanoparticles (AuNP) embedded into combinations of α-cyclodextrin (α-CD) and a poloxamine (Tetronic®90R4). Thermo-responsive AuNP-containing α-CD/Tetronic®90R4 hydrogels are formed under well-defined conditions of concentration. The AuNP displayed an average size of ca. 7 nm and a narrow distribution, as determined by TEM. The AuNP/α-CD/Tetronic®90R4 system proved to be stable over time. Upon heating above the gel-to-sol transition temperature, the studied catalytic system allowed hydrogenation of a wide range of substrates such as alkenes, alkynes and aldehydes under biphasic conditions. Upon repeated heating/cooling cycles, the Au NP/α-CD/Tetronic®90R4 catalytic system could be recycled several times without a significant decline in catalytic activity.

Graphical abstract: Hydrogenation of hydrophobic substrates catalyzed by gold nanoparticles embedded in Tetronic/cyclodextrin-based hydrogels

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Supplementary files

Article information


Submitted
30 Nov 2018
Accepted
25 May 2019
First published
27 May 2019

New J. Chem., 2019,43, 9865-9872
Article type
Paper

Hydrogenation of hydrophobic substrates catalyzed by gold nanoparticles embedded in Tetronic/cyclodextrin-based hydrogels

M. Chevry, S. Menuel, B. Léger, S. Noël, E. Monflier and F. Hapiot, New J. Chem., 2019, 43, 9865
DOI: 10.1039/C8NJ06081A

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