Having a high thermal stability and a fluorescent material on an organic solvent stable

Having a high thermal stability and the stability of the fluorescent material organic solvent, the base unit of the formula n, in the formula [3 (DMA) 2 (H2O) 2 Ln2 (OBA)]: Ln is Eu or Tb, OBA 4,4' to - diphenylether dicarboxylic acid ions, the DMA is N, N- dimethylacetamide, n is 1 to infinity positive natural number; the fluorescent material is a metal-organic framework, the metal organic framework has a crystalline Science independence rare earth ions Eu3 + or Tb3 +, form one pair of adjacent even core unit between two rare earth ions by ligand-independent bridge, dual-core unit further cross-connected to form a three-dimensional network structure by organic ligands. Advantage of the present invention is that: the fluorescent material has good thermal stability and solvent stability, facilitate recognition by the practical application of fluorescent organic molecules; the preparation method of the fluorescent material is simple, easy to implement, has a remarkable technical effects and Value.