Post-Synthesis Modification of a Metal–Organic Framework To Form Metallosalen-Containing MOF Materials

Abstract

A series of metallosalen-based metal–organic frameworks (MOFs) have been prepared by the post-synthesis modification of Mn^IIISO-MOF, a Mn³⁺(salen)-based MOF. Treatment of Mn^IIISO-MOF with H₂O₂ effects the removal of the Mn³⁺ ions from the salen struts, which can then be remetalated with a variety of metal precursors to form isostructural MSO-MOF materials. The presence of the new metallosalen struts in MSO-MOF was fully confirmed by ICP-OES, MALDI–TOF MS, PXRD, and TGA. Furthermore, the remetalated Mn^IISO-MOF material displays similar catalytic activity and porosity to the parent MOF.