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Iron Porphyrins Embedded into a Supramolecular Porous Organic Cage for Electrochemical CO 2 Reduction in Water
Author(s) -
Smith Peter T.,
Benke Bahiru Punja,
Cao Zhi,
Kim Younghoon,
Nichols Eva M.,
Kim Kimoon,
Chang Christopher J.
Publication year - 2018
Publication title -
angewandte chemie international edition
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 5.831
H-Index - 550
eISSN - 1521-3773
pISSN - 1433-7851
DOI - 10.1002/anie.201803873
Subject(s) - supramolecular chemistry , electrochemistry , faraday efficiency , catalysis , porosity , substrate (aquarium) , chemical engineering , monomer , materials science , chemistry , nanotechnology , electrode , polymer , molecule , organic chemistry , engineering , oceanography , geology
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.