Porphyrin Supramolecular Solids Assembled with the Aid of Lanthanide Ions

Reactions of free-base tetra(4-carboxyphenyl)porphyrin with lanthanide ions as Pr3+, Dy3+, and Nd3+ led to open metal−organic framework solids sustained by polynuclear metal−carboxylate clusters. Their three-dimensional structures are characterized by
channel voids accessible to other guest components (e.g., water, small organics). Crystalline solids obtained by the hydrothermal synthesis
with Dy3+ and Nd3+ reagents reveal remarkable stability and represent the first example of hybrid porphyrin-lanthanide single framework
architectures.