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Title: Iron Porphyrins Embedded into a Supramolecular Porous Organic Cage for Electrochemical CO 2 Reduction in Water

Journal Article · · Angewandte Chemie
 [1];  [2];  [1]; ORCiD logo [3];  [1]; ORCiD logo [4]; ORCiD logo [5]
  1. Department of Chemistry University of California, Berkeley Chemical Sciences Division Lawrence Berkeley National Laboratory Berkeley CA 94720-1460 USA
  2. Center for Self-assembly and Complexity (CSC) Institute for Basic Science (IBS) Pohang 37673 Republic of Korea
  3. Department of Chemistry Pohang University of Science and Technology Pohang 37673 Republic of Korea
  4. Center for Self-assembly and Complexity (CSC) Institute for Basic Science (IBS) Pohang 37673 Republic of Korea, Department of Chemistry Pohang University of Science and Technology Pohang 37673 Republic of Korea
  5. Department of Chemistry University of California, Berkeley Chemical Sciences Division Lawrence Berkeley National Laboratory Berkeley CA 94720-1460 USA, Department Molecular and Cell Biology and the Howard Hughes Medical Institute University of California, Berkeley Berkeley CA 94720-1460 USA

Abstract A porous organic cage composed of six iron tetraphenylporphyrins was used as a supramolecular catalyst for electrochemical CO 2 ‐to‐CO conversion. This strategy enhances active site exposure and substrate diffusion relative to the monomeric catalyst, resulting in CO generation with near‐quantitative Faradaic efficiency in pH 7.3 water, with activities reaching 55 250 turnovers. These results provide a starting point for the design of supramolecular catalysts that can exploit the properties of the surrounding matrix yet retain the tunability of the original molecular unit.

Sponsoring Organization:
USDOE
OSTI ID:
1459221
Journal Information:
Angewandte Chemie, Journal Name: Angewandte Chemie Journal Issue: 31 Vol. 130; ISSN 0044-8249
Publisher:
Wiley Blackwell (John Wiley & Sons)Copyright Statement
Country of Publication:
Germany
Language:
English

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