Chem. J. Chinese Universities ›› 2022, Vol. 43 ›› Issue (10): 20220115.doi: 10.7503/cjcu20220115

• Analytical Chemistry • Previous Articles     Next Articles

Synthesis of Schiff-based Covalent Organic Framework and Its Recognition of I

WANG Di1, ZHONG Keli1, TANG Lijun1, HOU Shuhua1(), LYU Chunxin2()   

  1. 1.College of Chemistry and Materials Engineering,Bohai University,Jinzhou 121013,China
    2.College of Biological,Chemical Sciences and Engineering,Jiaxing University,Jiaxing 314001,China
  • Received:2022-02-28 Online:2022-10-10 Published:2022-06-21
  • Contact: HOU Shuhua,LYU Chunxin E-mail:housh@buaa.edu.cn;chunxin.lu@zjxu.edu.cn
  • Supported by:
    the National Natural Science Foundation of China(22005038);the Natural Science Foundation of Liaoning Province, China(2021-MS-314)

Abstract:

A new type of covalent organic framework fluorescent probe, TpPa-COOH COF, is designed and synthesized. The probe can highly selectively recognize I? in a solution of THF/H2O(volume ratio of1∶1). The color of the solution changed from light red to yellow after adding I? to the probe solution which can be observed with the naked eye, and the fluorescence intensity is significantly reduced at 317 nm. The probe has a high selectivity with a detection limit of 0.028 μmol/L, and the pH range is wide(1~13), which provids a good application prospect in I? detection.

Key words: Covalent organic framework, Fluorescent probe, Iodide ion, Naked eye recognition

CLC Number: 

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