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

Miao Qi, Benny Kia Jia Chew, Kwai Ga Yee, Zhong Xing Zhang, David J. Young, T. S.Andy Hor

Research output: Contribution to journalArticleResearchpeer-review

Abstract

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.

Original languageEnglish
Pages (from-to)23686-23692
Number of pages7
JournalRSC Advances
Volume6
Issue number28
DOIs
Publication statusPublished - 2016
Externally publishedYes

Fingerprint

Catalysis
Catalysts
Nanoparticles
Methanol
Bearings (structural)
Molecular recognition
Cyclodextrins
Palladium
Iron oxides
Recycling
Recovery
Degradation
Temperature

Cite this

Qi, M., Chew, B. K. J., Yee, K. G., Zhang, Z. X., Young, D. J., & Hor, T. S. A. (2016). A catch-release catalysis system based on supramolecular host-guest interactions. RSC Advances, 6(28), 23686-23692. https://doi.org/10.1039/c6ra01846g
Qi, Miao ; Chew, Benny Kia Jia ; Yee, Kwai Ga ; Zhang, Zhong Xing ; Young, David J. ; Hor, T. S.Andy. / A catch-release catalysis system based on supramolecular host-guest interactions. In: RSC Advances. 2016 ; Vol. 6, No. 28. pp. 23686-23692.
@article{de42e1988e5b4455b4a637f407e79197,
title = "A catch-release catalysis system based on supramolecular host-guest interactions",
abstract = "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.",
author = "Miao Qi and Chew, {Benny Kia Jia} and Yee, {Kwai Ga} and Zhang, {Zhong Xing} and Young, {David J.} and Hor, {T. S.Andy}",
year = "2016",
doi = "10.1039/c6ra01846g",
language = "English",
volume = "6",
pages = "23686--23692",
journal = "RSC Advances: an international journal to further the chemical sciences",
issn = "2046-2069",
publisher = "Royal Society of Chemistry (RSC)",
number = "28",

}

Qi, M, Chew, BKJ, Yee, KG, Zhang, ZX, Young, DJ & Hor, TSA 2016, 'A catch-release catalysis system based on supramolecular host-guest interactions', RSC Advances, vol. 6, no. 28, pp. 23686-23692. https://doi.org/10.1039/c6ra01846g

A catch-release catalysis system based on supramolecular host-guest interactions. / Qi, Miao; Chew, Benny Kia Jia; Yee, Kwai Ga; Zhang, Zhong Xing; Young, David J.; Hor, T. S.Andy.

In: RSC Advances, Vol. 6, No. 28, 2016, p. 23686-23692.

Research output: Contribution to journalArticleResearchpeer-review

TY - JOUR

T1 - A catch-release catalysis system based on supramolecular host-guest interactions

AU - Qi, Miao

AU - Chew, Benny Kia Jia

AU - Yee, Kwai Ga

AU - Zhang, Zhong Xing

AU - Young, David J.

AU - Hor, T. S.Andy

PY - 2016

Y1 - 2016

N2 - 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.

AB - 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.

UR - http://www.scopus.com/inward/record.url?scp=84960145552&partnerID=8YFLogxK

U2 - 10.1039/c6ra01846g

DO - 10.1039/c6ra01846g

M3 - Article

VL - 6

SP - 23686

EP - 23692

JO - RSC Advances: an international journal to further the chemical sciences

JF - RSC Advances: an international journal to further the chemical sciences

SN - 2046-2069

IS - 28

ER -