Skip to main content
placeholder image

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

Journal Article


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). This journal is

Publication Date


  • 2020

Citation


  • Wang, D., Malmberg, R., Pernik, I., Prasad, S. K. K., Roemer, M., Venkatesan, K., . . . Messerle, B. A. (2020). Development of tethered dual catalysts: synergy between photo- And transition metal catalysts for enhanced catalysis. Chemical Science, 11(24), 6256-6267. doi:10.1039/d0sc02703k

Scopus Eid


  • 2-s2.0-85089573270

Start Page


  • 6256

End Page


  • 6267

Volume


  • 11

Issue


  • 24

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). This journal is

Publication Date


  • 2020

Citation


  • Wang, D., Malmberg, R., Pernik, I., Prasad, S. K. K., Roemer, M., Venkatesan, K., . . . Messerle, B. A. (2020). Development of tethered dual catalysts: synergy between photo- And transition metal catalysts for enhanced catalysis. Chemical Science, 11(24), 6256-6267. doi:10.1039/d0sc02703k

Scopus Eid


  • 2-s2.0-85089573270

Start Page


  • 6256

End Page


  • 6267

Volume


  • 11

Issue


  • 24