发光
化学
镧系元素
双功能
苯甲酸
金属有机骨架
荧光
猝灭(荧光)
热稳定性
离子
水溶液中的金属离子
无机化学
光化学
物理化学
吸附
催化作用
有机化学
物理
光电子学
量子力学
作者
Yu Zhou,Hongyan Zhao,Zi-Jun Ling,Jing Zhou,Xueyan Zhao
标识
DOI:10.1016/j.ica.2022.121159
摘要
Two new Ln-MOFs, namely {[Ln(L)3]·DMF}n (Ln = Tb (1), Eu (2); HL = 4-pyridin-4-yl-benzoic acid), have been constructed by the reaction of HL, and Ln(OH)3 under solvothermal conditions. 1 and 2 are isomorphic and feature two-dimension frameworks with [Ln(COO)2]n chains. Notably, both 1 and 2 demonstrate high thermal stability and good luminescence. Furthermore, 1 and 2 can act as multi-responsive fluorescent probes for Fe3+ and MnO4− ions. The detection limits are 6.97, 7.06 and 2.77, 3.53 μM for 1 and 2, respectively, and the quenching constants (Ksv) are 8.01 × 103, 1.21 × 104 and 1.07 × 104, 1.43 × 104 M−1 for 1 and 2, respectively.
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