Electrochemical synthesis of anhydrous luminescent Tb 3+ complexes with aromatic and heterocyclic carboxylic acids

The electrochemical synthesis of anhydrous terbium(III) complex compounds TbL3 and Tb2L3 with several aromatic and heterocyclic carboxylic acids has been performed. Thermal stability of the synthesized complexes has been studied by means of thermogravimetry, and terbium(III) 4-tert-butylbenzoate has been found the most thermally stable (up to 400°C). Luminescent properties of the obtained compounds have been studied, and the terbium(III) complex with 2,3-pyridinedicarboxylic acid has exhibited the most efficient luminescence.