Fabrication of Two Isomorphic and Hyperstable Rare Earth-Based Metal-Organic Frameworks with Efficient Ratiometric Probe and Photocatalytic Performances.
Geng TanRuo-Qin JiaXin ZhaoYu-Qiong GuoLi-Lei ZhangXiao-Han WangJian-Ge WangXun FengBo LiLi-Ya WangPublished in: Inorganic chemistry (2022)
Two isomorphic lanthanide compounds {[Ln(ddpp)(H 2 O)]·CH 3 CN} n (Ln = Eu and Gd, H 4 ddpp = 2,5-di(2',4'-dicarboxylphenyl)pyridine) were synthesized. Complex 1-Eu displays ultrahigh acid-base stability and thermal stability. Furthermore, luminescence measurements revealed that 1-Eu could detect quinolone antibiotics with an ultralow limit of detection in aqueous solution. The ratiometric probe properties for sensing antibiotics could be attributed to the incompletely sensitized Eu 3+ ion of the ligand. Remarkably, it is interesting that 1-Gd exhibits excellent tetracycline degradation properties under visible light. Ultraviolet-visible diffuse reflectance spectroscopy and valence band X-ray photoelectron spectroscopy were carried out to investigate the photodegradation mechanisms. Moreover, a rational explanation for the fluorescent probe and photocatalysis behavior of these two complexes was also discussed with the assistance of density functional theory calculations.
Keyphrases
- visible light
- living cells
- fluorescent probe
- density functional theory
- single molecule
- metal organic framework
- quantum dots
- molecular dynamics
- aqueous solution
- high resolution
- energy transfer
- escherichia coli
- sensitive detection
- molecular dynamics simulations
- hydrogen peroxide
- nitric oxide
- room temperature
- loop mediated isothermal amplification
- highly efficient
- magnetic resonance imaging
- biofilm formation