|Title||Iron Porphyrins Embedded into a Supramolecular Porous Organic Cage for Electrochemical CO2 Reduction in Water|
|Publication Type||Journal Article|
|Year of Publication||2018|
|Authors||Smith, PT, Benke, BPunja, Cao, Z, Kim, Y, Nichols, EM, Kim, K, Chang, CJ|
|Journal||Angewandte Chemie International Edition|
|Keywords||CO2 reduction, ELECTROCHEMISTRY, porous organic cages, porphyrins, supramolecular chemistry|
Abstract A porous organic cage composed of six iron tetraphenylporphyrins was used as a supramolecular catalyst for electrochemical CO2-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.