Accessing three oxidation states of cobalt in M6L3 nanoprisms with cobalt-porphyrin walls

Nanocages with porphyrin walls are common, but studies of such structures hosting redox-active metals are rare. Pt2+-linked M6L3 nanoprisms with cobalt-porphyrin walls were prepared and their redox properties were evaluated electrochemically and chemically, leading to the first time that cobalt-porphyrin nanocages have been characterized in Co-I, Co-II, and Co-III states.