A catch-release catalysis system based on supramolecular host-guest interactions

Miao Qi; Benny Kia Jia Chew; Kwai Ga Yee; Zhong-Xing Zhang; David James Young; T S Andy Hor

doi:10.1039/C6RA01846G

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A catch-release catalysis system based on supramolecular host-guest interactions

Journal article

Peer reviewed

A catch-release catalysis system based on supramolecular host-guest interactions

Miao Qi, Benny Kia Jia Chew, Kwai Ga Yee, Zhong-Xing Zhang, David James Young and T S Andy Hor

RSC Advances, Vol.6(28), pp.23686-23692

2016

DOI: https://doi.org/10.1039/C6RA01846G

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Abstract

Chemical Sciences

A generic catch-release catalysis system has been designed for the recovery of homogeneous catalysts at the end of a reaction using host-guest interactions. This proof-of-concept system consists of a palladium(II)-dipyrazole complex bearing an adamantyl (Ad) molecular recognition moiety (guest), and magnetic nanoparticles (MNP) decorated with β-cyclodextrins (β-CD) (host). The density of β-CD on the iron oxide nanoparticles was up to 3.1 × 10-4 mmol per mg, sufficient to efficiently catch the Ad-adorned Pd catalyst in aqueous methanol at room temperature. Release and recycling of the catalyst was achieved by extraction with methanol. This catch-release system performed well in the Suzuki-Miyaura coupling, but suffers from slow degradation which restricts the number of times that the catalyst and magnetic nanoparticles can be recycled and reused.

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Title: A catch-release catalysis system based on supramolecular host-guest interactions
Authors: Miao Qi (Author) - Institute of Materials Research and Engineering, Singapore
Benny Kia Jia Chew (Author) - Institute of Materials Research and Engineering, Singapore
Kwai Ga Yee (Author) - Institute of Materials Research and Engineering, Singapore
Zhong-Xing Zhang (Author) - Institute of Materials Research and Engineering, Singapore
David James Young (Author) - University of the Sunshine Coast - Faculty of Science, Health, Education and Engineering
T S Andy Hor (Author) - Institute of Materials Research and Engineering, Singapore
Publication details: RSC Advances, Vol.6(28), pp.23686-23692
Publisher: Royal Society of Chemistry (R S C) Publications
Date published: 2016
DOI: 10.1039/C6RA01846G
ISSN: 2046-2069
Organisation Unit: University of the Sunshine Coast, Queensland
Language: English
Record Identifier: 99449408702621
Output Type: Journal article

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