Templated synthesis of a layered erbium-organic framework based on 4,6-dimethyl-5-nitroisophthalic acid (H2dna)

► We synthesized a new 2D lanthanide-organic framework containing large cavities. ► The uncoordinated 4,4′-bipy were trapped in the cavities. ► The 4,4′-bipy molecules template the formation of the 2D layer framework.