Chinese Journal of Organic Chemistry ›› 2020, Vol. 40 ›› Issue (9): 2938-2948.DOI: 10.6023/cjoc202005010 Previous Articles     Next Articles


马学林a,b, 韩利民a, 张骁勇b, 郝占忠b, 杨威b, 张玉恒b, 王丽b   

  1. a 内蒙古工业大学化工学院 呼和浩特 010051;
    b 包头师范学院化学学院 内蒙古包头 014030
  • 收稿日期:2020-05-05 修回日期:2020-07-01 发布日期:2020-07-17
  • 通讯作者: 张骁勇, 韩利民;
  • 基金资助:

A Highly Stable Multi-response Zirconium(IV) Metal-Organic Frameworks for Fluorescence Sensing of Fe3+, Cr2O72- and Organic Small Molecules

Ma Xuelina,b, Han Limina, Zhang Xiaoyongb, Hao Zhanzhongb, Yang Weib, Zhang Yuhengb, Wang Lib   

  1. a Chemical Engineering College, Inner Mongolia University of Technology, Hohhot 010051;
    b Department of Chemistry, Baotou Teachers'College, Baotou, Inner Mongolia 014030
  • Received:2020-05-05 Revised:2020-07-01 Published:2020-07-17
  • Supported by:
    Project supported by the National Natural Science Foundation of China (No. 51964041), the Natural Science Foundation of Inner Mongolia (Nos. 2018BS02009, 2019MS02031), the Education Department Project of Inner Mongolia (No. NJZY19187), and the Young Innovative Talents in Baotou City (No. 30324001).

A new zirconium(IV) metal-organic framework (Zr-MOF) based on tricarboxylate ligands, namely ZrL▪2H2O (L=2,2',2''-([1,3,5]-triazine-2,4,6-triimino)tribenzoic acid)) has been designed and synthesized. It can be served as a platform of multi-responsive fluorescence sensor for Fe3+ and Cr2O72- in water. The Stern-Volmer constants (KSV) are 9.54×104, 1.75×104 L·mol-1, and the limits of detection are 3.78×10-8, 9.12×10-7 mol/L, respectively. Meanwhile, it can also be used as a multi-response fluorescence probe to detect acetone, CCl4 and xylene in N,N-dimethylformamide (DMF) solution. The Stern-Volmer constants (KSV) are 6534.3, 4325.7, 4025.1 mL-1, and the limits of detection are 1.09×10-6, 2.73×10-5, 3.17×10-5 mL, respectively. The Zr-MOF was characterized by FTIR,1H NMR, powder X-ray diffraction (PXRD), thermo gravimetric analysis (TGA) and elemental analysis. Interestingly, the Zr-MOF has the high water stability and pH stability, but its fluorescence intensity will show certain change law in the range of pH 0~14. Water and urine sample application test showed that Zr-MOF had high sensitive detection for Fe3+, and simulated organic solvents test showed that Zr-MOF has high sensitivity and selectivity to acetone, CCl4 and xylene.

Key words: Zr-MOF, fluorescence sensor, Fe3+, Cr2O72-, acetone, CCl4, xylene