The invention discloses a
metal organic framework LCU-138, a preparation method thereof and application of the
metal organic framework LCU-138 in biomarker detection, the
chemical formula of the
metal organic framework LCU-138 is ({[Cd (L) 0.5 (bppa) 0.5. H2O]} n), the
metal organic framework LCU-138 has a three-dimensional supramolecular structure, L represents anions after
deprotonation of a ligand 2 ', 5'-difluoro-[1, 1 ': 4', 1 '-triphenyl]-2, 2' ', 4, 4'-tetracarboxylic acid, and bppa represents a ligand 1, 2-bis (4-pyridyl) ethane. The LCU-138 fluorescent material provided by the invention has good
chemical stability, and the frame structure is not damaged after the LCU-138 fluorescent material is soaked in various solvents for 24 hours; biomarkers 2-aminoacetophenone and
epinephrine can be efficiently detected, the
fluorescence quenching constants (Ksv) of the biomarkers are 1.42 * 10 < 4 > M <-1 > and 5.84 * 10 < 3 > M <-1 > respectively, the detection limits of the biomarkers are 3.57 mu M and 10.32 mu M respectively, and the biomarkers have high sensitivity, high anti-interference performance and
rapid detection capacity and can be recycled.