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Issue 24, 2020
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Development of tethered dual catalysts: synergy between photo- and transition metal catalysts for enhanced catalysis

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Abstract

While dual photocatalysis–transition metal catalysis strategies are extensively reported, the majority of systems feature two separate catalysts, limiting the potential for synergistic interactions between the catalytic centres. In this work we synthesised a series of tethered dual catalysts allowing us to investigate this underexplored area of dual catalysis. In particular, Ir(I) or Ir(III) complexes were tethered to a BODIPY photocatalyst through different tethering modes. Extensive characterisation, including transient absorption spectroscopy, cyclic voltammetry and X-ray absorption spectroscopy, suggest that there are synergistic interactions between the catalysts. The tethered dual catalysts were more effective at promoting photocatalytic oxidation and Ir-catalysed dihydroalkoxylation, relative to the un-tethered species, highlighting that increases in both photocatalysis and Ir catalysis can be achieved. The potential of these catalysts was further demonstrated through novel sequential reactivity, and through switchable reactivity that is controlled by external stimuli (heat or light).

Graphical abstract: Development of tethered dual catalysts: synergy between photo- and transition metal catalysts for enhanced catalysis

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Supplementary files

Article information


Submitted
12 May 2020
Accepted
03 Jun 2020
First published
05 Jun 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, 6256-6267
Article type
Edge Article

Development of tethered dual catalysts: synergy between photo- and transition metal catalysts for enhanced catalysis

D. Wang, R. Malmberg, I. Pernik, S. K. K. Prasad, M. Roemer, K. Venkatesan, T. W. Schmidt, S. T. Keaveney and B. A. Messerle, Chem. Sci., 2020, 11, 6256
DOI: 10.1039/D0SC02703K

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