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Issue 30, 2020
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The precise editing of surface sites on a molecular-like gold catalyst for modulating regioselectivity

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Abstract

It is extremely difficult to precisely edit a surface site on a typical nanoparticle catalyst without changing other parts of the catalyst. This precludes a full understanding of which site primarily determines the catalytic properties. Here, we couple experimental data collection with theoretical analysis to correlate rich structural information relating to atomically precise gold clusters with the catalytic performance for the click reaction of phenylacetylene and benzyl azide. We also identify a specific surface site that is capable of achieving high regioselectivity. We further conduct site-specific editing on a thiolate-protected gold cluster by peeling off two monomeric RS–Au–SR motifs and replacing them with two Ph2P–CH2–PPh2 staples. We demonstrate that the surface Au–Ph2P–CH2–PPh2–Au motifs enable extraordinary regioselectivity for the click reaction of alkyne and azide. The editing strategy for the surface motifs allows us to exploit previously inaccessible individual active sites and elucidate which site can explicitly govern the reaction outcome.

Graphical abstract: The precise editing of surface sites on a molecular-like gold catalyst for modulating regioselectivity

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Supplementary files

Article information


Submitted
19 Apr 2020
Accepted
02 Jul 2020
First published
21 Jul 2020

This article is Open Access
All publication charges for this article have been paid for by the Royal Society of Chemistry

Chem. Sci., 2020,11, 8000-8004
Article type
Edge Article

The precise editing of surface sites on a molecular-like gold catalyst for modulating regioselectivity

S. Li, H. Chen, X. Liu, H. Liu, J. Ma and Y. Zhu, Chem. Sci., 2020, 11, 8000
DOI: 10.1039/D0SC02207A

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    [Original citation] - Published by The Royal Society of Chemistry (RSC) on behalf of the European Society for Photobiology, the European Photochemistry Association, and RSC.
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    [Original citation] - Published by The Royal Society of Chemistry.

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