AI Article Synopsis
- * This grafting process replaces cyanide ligands with hydroxo and oxo ligands at the MOF's nodes, rather than just substituting aqua ligands.
- * The resulting iron complexes exhibit a broad absorption band linked to iron-to-zirconium charge transfer and demonstrate some electrochemical activity consistent with Fe(III/II) redox behavior.
Article Abstract
Starting with ferrocyanide ions in acidic aqueous solution, cyano-ferrate(II) species are post-synthetically grafted to the nodes of a mesoporous zirconium-based MOF, NU-1000. As indicated by single-crystal X-ray crystallography, grafting occurs by substitution of cyanide ligands by node-based hydroxo and oxo ligands rather than by substitution of node aqua ligands by cyanide ligands as bridges between Fe(II) and Zr(IV). The installed moieties yield a broad absorption band that is tentatively ascribed to iron-to-zirconium charge transfer. Consistent with Fe(III/II) redox activity, a modest fraction of the installed iron complexes are directly electrochemically addressable.
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| http://dx.doi.org/10.1021/acs.langmuir.2c03354 | DOI Listing |
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