Assembly, crystal structure and luminescent properties of coordination polymer of europium nitrate with an amide type bridging podand

A novel one-dimensional coordination polymeric structure comprised of dinuclear metallorings connected by ligands has been rationally assembled by the reaction of europium nitrate and an amide type bridging podand, 1,3-bis{[(2′-benzylaminoformyl)phenoxyl]methyl}benzene (L). At the same time, the luminescent properties of the Eu(III) complex were also investigated. Under the UV excitation, the complex exhibited characteristic emissions of europium ion and could be significant in the field of supramolecular photonic devices. The triplet excited state T1 of the ligand is well placed to allow energy transfer to Eu3+ excited states.