Copper nanoparticle heterogeneous catalytic ‘click’ cycloaddition confirmed by single-molecule spectroscopy

Matthew R. Decan, Stefania Impellizzeri, M. Luisa Marin and Juan C. Scaiano ()
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Matthew R. Decan: University of Ottawa
Stefania Impellizzeri: University of Ottawa
M. Luisa Marin: University of Ottawa
Juan C. Scaiano: University of Ottawa

Nature Communications, 2014, vol. 5, issue 1, 1-8

Abstract: Abstract Colloidal or heterogeneous nanocatalysts can improve the range and diversity of Cu(I)-catalysed click reactions and facilitate catalyst separation and reuse. Catalysis by metal nanoparticles raises the question as to whether heterogeneous catalysts may cause homogeneous catalysis through metal ion leaching, since the catalytic process could be mediated by the particle, or by metal ions released from it. The question is critical as unwanted homogeneous processes could offset the benefits of heterogeneous catalysis. Here, we combine standard bench scale techniques with single-molecule spectroscopy to monitor single catalytic events in real time and demonstrate that click catalysis occurs directly at the surface of copper nanoparticles; this general approach could be implemented in other systems. We use ‘from the mole to the molecule’ to describe this emerging idea in which mole scale reactions can be optimized through an intimate understanding of the catalytic process at the single-molecule—single catalytic nanoparticle level.

Date: 2014
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Persistent link: https://EconPapers.repec.org/RePEc:nat:natcom:v:5:y:2014:i:1:d:10.1038_ncomms5612

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DOI: 10.1038/ncomms5612

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