A Tb(III) complex based on 3−pyridylacetic showing luminescent detection for Fe3+ ion

A new Tb(III) complex based on 3−pyridylacetic acid, [Tb(H(3−PAA)2)(NO3)2] (1, 3−PAA = 3−pyridylacetic ligand), has been triumphantly prepared and structurally characterized. Complex 1 is a 1D chained structure linked by carboxylate groups of the 3−PAA ligand, and its 2D supramolecular packing is controlled mainly by hydrogen-bonds. The compound exhibits outstanding thermal stability and excellent stability under CH3OH solutions. Moreover, compound 1 shows a strong solid-state green-emitting emission at room temperature, which demonstrates that the ligand can effectively sensitize the emission of the Tb(III) ion, and it can serve as a responsive sensing material for detecting the Fe3+ ion in CH3OH solutions.