Luminescent and Magnetic Properties of Lanthanide-Thiophene-2,5-dicarboxylate Hybrid Materials

Abstract

Three lanthanide-thiophenedicarboxylate hybrid compounds, [(Eu2(TDC)3(CH3OH)2·(CH3OH)] (1), [(Yb2(TDC)3(DMF)(H2O)·(CH3CH2OH)] (2), and [(Tb2(TDC)3(H2O)4] (3) (where TDC is deprotonated thiophene-2,5-dicarboxylic acid and DMF is dimethylformamide), have been prepared by a hydrothermal method. The TDC ligands exhibit two unprecedented (κ2-κ1-μ2)−(κ1-κ1)−μ5 and (κ2)−(κ2)−μ2 coordination modes as well as other various modes. Structure analysis reveals that 2,5-thiophenedicarboxylic acid play a versatile role toward different lanthanide ions to form three-dimensional inorganic−organic hybrid frameworks. The luminescence experiments show that Eu(III) and Tb(III) compounds exhibit typical luminescence in the visible region, while the Yb(III) compound emits characteristic near-infrared luminescence in the solid state even with the coordinated water molecules. Besides luminescence, the Tb(III) compound also shows weak ferromagnetic behavior, which indicates that it is acting as a dual function material.

Rational Design of Zinc–Organic Coordination Polymers Directed by N‐Donor Co‐ligands

“…[10] However, MOCPs constructed from thiophene-based compounds are rather limited and most of the attention has been devoted on MOCPs built from thiophene-2,5-dicarboxylic acid, [11] which is already commercially available. Examples of the other reported organic linkers containing thiophene rings are even fewer, [12] possibly owing to synthetic difficulties.…”

Crystal structure of hexaaquamanganese(II) bis(3-carboxythiophene-2-carboxylate) C12H18MnO14S2

“…Among the reported studies about the construction of such complexes, versatile multicarboxylate ligands such as benzenepolycarboxylates, pyridinecarboxylates, and imidazolecarboxylates been extensively employed because of their rich coordination modes [6][7][8]. Thiophene and thiophene derivatives are useful and important organic moieties in preparing electronic and optical materials owing to their electron-transferring ability and structural rigidity [9][10][11][12]. However, new complexes constructed from thiophene are rather limited and most of the work has been devoted on complexes synthesised from commercially available thiophene-2,5-dicarboxylic acid.…”

Crystal structure of hexaquamanganese(II) (4-carboxythiophene-3- carboxylate hemihydrate, C12H16MnO16S2

“…Among the reported studies about the construction of such complexes, versatile multicarboxylate ligands such as benzenepolycarboxylates, pyridinecarboxylates, and imidazolecarboxylates have been extensively employed to construct new complexes owing to their rich coordination modes and strong coordination ability [6][7][8].Asignificant number of reports have been contributed to the use of thiophene and thiophene derivatives as ligands. These are useful and important organic moieties for the synthesis of electronic and optical materials owing to their good electron-transferring ability and structural rigidity [9][10][11][12]. However, newc omplexes constructedf romt hiophene-based compounds are rather limited and most of the work has been devoted on complexes builtf rom commercially available thiophene-2,5-dicarboxylic acid.…”