A multi-responsive luminescent sensor based on a super-stable sandwich-type terbium(iii)-organic framework.

A super-stable multifunctional terbium(iii)-organic framework, namely {[Tb(TATAB) (HO)]·NMP·HO} (Tb-MOF, HTATAB = 4,4',4''-s-triazine-1,3,5-triyltri-m-aminobenzoic acid, NMP = N-methyl-2-pyrrolidone) was synthesized. Tb-MOF exhibits a 2D sql structure with binuclear [Tb(COO)(HO)] units as 4-connected nodes, and free water and NMP molecules are inserted between 2D layers through hydrogen-bonding interactions, forming a sandwich-type architecture. Observably, such a framework remains intact in a remarkable variety of environments such as common solvents and aqueous solutions with metal cations and inorganic anions, as well as with a pH ranging from 1 to 13.

An Ultrastable Europium(III)-Organic Framework with the Capacity of Discriminating Fe/Fe Ions in Various Solutions.

An ultrastable luminescent europium-organic framework, {[Eu(L)(HO)]·NMP·HO} (CTGU-2; NMP = N-methyl-2-pyrrolidone), can first detect Fe/Fe cations in different medium systems with high selectivity and sensitivity, and it also exhibits high sensitivity for CrO anion and acetone with a wide linear range and a low detection limit.