Ligands modulate reaction pathway in the hydrogenation of 4-Nitrophenol catalyzed by gold nanoclusters

Protective ligands are key components of ligand-protected metal nanoclusters (NCs), as they offer good stability and multiple functionalities to the metal NCs in solution. Herein, we demonstrated that the ligand landscape on the NC surface could also be used to modulate the catalytic active sites o...

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Main Authors:	Nasaruddin, Ricca Rahman, Chen, Tiankai, Li, Jingguo, Goswami, Nirmal, Zhang, Jiaguang, Yan, Ning, Xie, Jianping
Format:	Article
Language:	English English
Published:	WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim 2018
Subjects:	QD Chemistry TP155 Chemical engineering
Online Access:	http://irep.iium.edu.my/66301/ http://irep.iium.edu.my/66301/ http://irep.iium.edu.my/66301/ http://irep.iium.edu.my/66301/1/66301_Ligands%20Modulate%20Reaction%20Pathway.pdf http://irep.iium.edu.my/66301/2/66301_Ligands%20Modulate%20Reaction%20Pathway_SCOPUS.pdf

id	iium-66301
recordtype	eprints
spelling	iium-663012019-01-17T07:27:56Z http://irep.iium.edu.my/66301/ Ligands modulate reaction pathway in the hydrogenation of 4-Nitrophenol catalyzed by gold nanoclusters Nasaruddin, Ricca Rahman Chen, Tiankai Li, Jingguo Goswami, Nirmal Zhang, Jiaguang Yan, Ning Xie, Jianping QD Chemistry TP155 Chemical engineering Protective ligands are key components of ligand-protected metal nanoclusters (NCs), as they offer good stability and multiple functionalities to the metal NCs in solution. Herein, we demonstrated that the ligand landscape on the NC surface could also be used to modulate the catalytic active sites of metal NCs in solution thus to direct the catalytic reaction towards desirable products through a different pathway. We found that thiolate ligands, namely, p-mercaptobenzoic acid (p-MBA), in Au 25(p-MBA)18 NCs could influence the reaction pathway in the catalytic hydrogenation of 4-nitrophenol in solution. In particular, the well-defined ligand structure of Au25(pMBA)18 NCs in solution provided a unique environment for the coadsorption of two substrate molecules (4-nitrophenol) on the Au NC surface, and this ligand modulation could activate a reaction pathway involving the formation of azobenzene intermediates from the two adsorbed substrate molecules, which are missing in nanogold catalysts without protective ligands. The discovery of this alternative reaction pathway highlights the importance of ligands on nanogold catalysts in modulating their active sites and directing their catalytic reaction pathways in solution and provides good opportunities to tailor the selectivity of ligand-protected metal NC catalysts. WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim 2018-01-23 Article PeerReviewed application/pdf en http://irep.iium.edu.my/66301/1/66301_Ligands%20Modulate%20Reaction%20Pathway.pdf application/pdf en http://irep.iium.edu.my/66301/2/66301_Ligands%20Modulate%20Reaction%20Pathway_SCOPUS.pdf Nasaruddin, Ricca Rahman and Chen, Tiankai and Li, Jingguo and Goswami, Nirmal and Zhang, Jiaguang and Yan, Ning and Xie, Jianping (2018) Ligands modulate reaction pathway in the hydrogenation of 4-Nitrophenol catalyzed by gold nanoclusters. ChemCatChem, 10 (2). pp. 395-402. ISSN 1867-3899 https://onlinelibrary.wiley.com/doi/pdf/10.1002/cctc.201701472 10.1002/cctc.201701472
repository_type	Digital Repository
institution_category	Local University
institution	International Islamic University Malaysia
building	IIUM Repository
collection	Online Access
language	English English
topic	QD Chemistry TP155 Chemical engineering
spellingShingle	QD Chemistry TP155 Chemical engineering Nasaruddin, Ricca Rahman Chen, Tiankai Li, Jingguo Goswami, Nirmal Zhang, Jiaguang Yan, Ning Xie, Jianping Ligands modulate reaction pathway in the hydrogenation of 4-Nitrophenol catalyzed by gold nanoclusters
description	Protective ligands are key components of ligand-protected metal nanoclusters (NCs), as they offer good stability and multiple functionalities to the metal NCs in solution. Herein, we demonstrated that the ligand landscape on the NC surface could also be used to modulate the catalytic active sites of metal NCs in solution thus to direct the catalytic reaction towards desirable products through a different pathway. We found that thiolate ligands, namely, p-mercaptobenzoic acid (p-MBA), in Au 25(p-MBA)18 NCs could influence the reaction pathway in the catalytic hydrogenation of 4-nitrophenol in solution. In particular, the well-defined ligand structure of Au25(pMBA)18 NCs in solution provided a unique environment for the coadsorption of two substrate molecules (4-nitrophenol) on the Au NC surface, and this ligand modulation could activate a reaction pathway involving the formation of azobenzene intermediates from the two adsorbed substrate molecules, which are missing in nanogold catalysts without protective ligands. The discovery of this alternative reaction pathway highlights the importance of ligands on nanogold catalysts in modulating their active sites and directing their catalytic reaction pathways in solution and provides good opportunities to tailor the selectivity of ligand-protected metal NC catalysts.
format	Article
author	Nasaruddin, Ricca Rahman Chen, Tiankai Li, Jingguo Goswami, Nirmal Zhang, Jiaguang Yan, Ning Xie, Jianping
author_facet	Nasaruddin, Ricca Rahman Chen, Tiankai Li, Jingguo Goswami, Nirmal Zhang, Jiaguang Yan, Ning Xie, Jianping
author_sort	Nasaruddin, Ricca Rahman
title	Ligands modulate reaction pathway in the hydrogenation of 4-Nitrophenol catalyzed by gold nanoclusters
title_short	Ligands modulate reaction pathway in the hydrogenation of 4-Nitrophenol catalyzed by gold nanoclusters
title_full	Ligands modulate reaction pathway in the hydrogenation of 4-Nitrophenol catalyzed by gold nanoclusters
title_fullStr	Ligands modulate reaction pathway in the hydrogenation of 4-Nitrophenol catalyzed by gold nanoclusters
title_full_unstemmed	Ligands modulate reaction pathway in the hydrogenation of 4-Nitrophenol catalyzed by gold nanoclusters
title_sort	ligands modulate reaction pathway in the hydrogenation of 4-nitrophenol catalyzed by gold nanoclusters
publisher	WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim
publishDate	2018
url	http://irep.iium.edu.my/66301/ http://irep.iium.edu.my/66301/ http://irep.iium.edu.my/66301/ http://irep.iium.edu.my/66301/1/66301_Ligands%20Modulate%20Reaction%20Pathway.pdf http://irep.iium.edu.my/66301/2/66301_Ligands%20Modulate%20Reaction%20Pathway_SCOPUS.pdf
first_indexed	2023-09-18T21:34:07Z
last_indexed	2023-09-18T21:34:07Z
_version_	1777412706047885312

Ligands modulate reaction pathway in the hydrogenation of 4-Nitrophenol catalyzed by gold nanoclusters

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