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Issue 2, 2020
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Core–shell PdCu bimetallic colloidal nanoparticles in Sonogashira cross-coupling reaction: mechanistic insights into the catalyst mode of action

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Abstract

Core–shell PdCu nanoparticles with different metal proportions were synthesized using a one-pot methodology and characterized by STEM, HRTEM, XANES and EXAFS analysis. The bimetallic nanoparticles were applied as catalysts in the Sonogashira cross-coupling reaction to investigate the mode of action of the PdCu in the reaction. The copper content directly influenced the generation of the cross-coupling product, shaping the performance of the catalyst. A quasi-homogeneous reaction pathway was evidenced by kinetics and poisoning experiments as well as XAS, HRTEM and HRMS analysis. These findings help to elucidate the mode of action of the PdCu nanocatalysts in the, as yet, unrevealed Sonogashira mechanism and the potential development of new nanocatalysts.

Graphical abstract: Core–shell PdCu bimetallic colloidal nanoparticles in Sonogashira cross-coupling reaction: mechanistic insights into the catalyst mode of action

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Supplementary files

Article information


Submitted
24 Oct 2019
Accepted
12 Dec 2019
First published
13 Dec 2019

Nanoscale, 2020,12, 1171-1179
Article type
Paper

Core–shell PdCu bimetallic colloidal nanoparticles in Sonogashira cross-coupling reaction: mechanistic insights into the catalyst mode of action

D. N. Olekszyszen, B. L. Albuquerque, D. D. O. Silva, G. L. Tripodi, D. C. de Oliveira and J. B. Domingos, Nanoscale, 2020, 12, 1171
DOI: 10.1039/C9NR09075D

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