Supramolecular luminescent hydrogels based on β-amino acid and lanthanide ions obtained by self-assembled hydrothermal reactions

Using the hydrothermal method, we obtained new hydrogels based on lanthanide ions and iminodiacetic acid. The hydrogels of europium and terbium show reddish and greenish luminescence, respectively. A mixed Eu-Tb gel system was prepared and the luminescent properties were studied.