Post-synthesis modification of a metal-organic framework to form metallosalen-containing MOF materials.

A series of metallosalen-based metal-organic frameworks (MOFs) have been prepared by the post-synthesis modification of Mn(III)SO-MOF, a Mn(3+)(salen)-based MOF. Treatment of Mn(III)SO-MOF with H(2)O(2) effects the removal of the Mn(3+) 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(II)SO-MOF material displays similar catalytic activity and porosity to the parent MOF.