Issue 40, 2022

Cooperative catalysis of Cu/2,2,6,6-tetramethyl-1-piperidine-N-oxyl nanocatalysts supported by ultraviolet light-responsive polyimides

Abstract

The development of ultraviolet (UV) light-regulated cooperative catalysts has attracted wide attention and increased the understanding of structure–activity relationships. Here, we have used azobenzene-containing polyimides as supports for the controllable synthesis of Cu/2,2,6,6-tetramethyl-1-piperidine-N-oxyl (TEMPO) nanocatalysts. Of these nanocatalysts, the catalytic components bearing a pyrene moiety were immobilized onto polyimides containing azobenzene and naphthalene diimide (NDI) moieties via aromatic stacking interactions and hydrophobic interactions in nanoprecipitation. Aromatic stacking clusters were formed and randomly distributed inside nanocatalysts, bringing catalytic components in close proximity for cooperative catalysis. The size of aromatic stacking clusters might be regulated by the UV light-responsive azobenzene units of polyimides. This strategy may find applications in the design and engineering of other multifunctional heterogeneous catalysts with controllable UV light-responsive behaviors.

Graphical abstract: Cooperative catalysis of Cu/2,2,6,6-tetramethyl-1-piperidine-N-oxyl nanocatalysts supported by ultraviolet light-responsive polyimides

Supplementary files

Article information

Article type
Communication
Submitted
07 Jul 2022
Accepted
04 Oct 2022
First published
04 Oct 2022

Dalton Trans., 2022,51, 15246-15250

Cooperative catalysis of Cu/2,2,6,6-tetramethyl-1-piperidine-N-oxyl nanocatalysts supported by ultraviolet light-responsive polyimides

W. Xiao, M. Qiu, Y. Peng, T. Chen, C. Yi and Z. Xu, Dalton Trans., 2022, 51, 15246 DOI: 10.1039/D2DT02181A

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