AI Article Synopsis
- The study presents a technique to anchor molecular catalysts on electrodes, combining their high performance with the convenience of solid surfaces.
- By using a non-covalent 'click' chemistry method, the molecular catalysts can be easily replaced when they degrade, enhancing the longevity of these systems.
- The approach allows for effective electrosynthesis in various environments, with the potential for recycling through controlled release of the catalysts.
Article Abstract
Anchoring molecular catalysts on electrode surfaces combines the high selectivity and activity of molecular systems with the practicality of heterogeneous systems. Molecular catalysts, however, are far less stable than traditional heterogeneous electrocatalysts, and therefore a method to easily replace anchored molecular catalysts that have degraded could make such electrosynthetic systems more attractive. Here we applied a non-covalent 'click' chemistry approach to reversibly bind molecular electrocatalysts to electrode surfaces through host-guest complexation with surface-anchored cyclodextrins. The host-guest interaction is remarkably strong and enables the flow of electrons between the electrode and the guest catalyst. Electrosynthesis in both organic and aqueous media was demonstrated on metal oxide electrodes, with stability on the order of hours. The catalytic surfaces can be recycled by controlled release of the guest from the host cavities and the readsorption of fresh guest.
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| http://dx.doi.org/10.1038/s41557-021-00652-y | DOI Listing |
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