Chinese Journal of Organic Chemistry ›› 2020, Vol. 40 ›› Issue (9): 2798-2803.DOI: 10.6023/cjoc202005084 Previous Articles     Next Articles


雷萌萌a,b, 周起航a,b, 杨莉a,b, 许志红a,b, 杨风岭a   

  1. a 郑州大学化学学院 郑州 450001;
    b 许昌学院化工与材料学院 河南许昌 461000
  • 收稿日期:2020-05-29 修回日期:2020-07-02 发布日期:2020-07-09
  • 通讯作者: 许志红, 杨风岭;
  • 基金资助:

A Highly Sensitive and Selective “Off-On” Fluorescent Probe for Cu2+ Based on Rhodamine B Hydrazone

Lei Mengmenga,b, Zhou Qihanga,b, Yang Lia,b, Xu Zhihonga,b, Yang Fenglinga   

  1. a College of Chemistry, Zhengzhou University, Zhengzhou 450001;
    b College of Chemical and Materials Engineering, Xuchang University, Xuchang, Henan 461000
  • Received:2020-05-29 Revised:2020-07-02 Published:2020-07-09
  • Supported by:
    Project supported by the Joint Program for Fostering Talents of National Natural Science Foundation of China and Henan Province (No. U1304202), the Program for Science and Technology Innovation Talents in Universities of Henan Province (No. 15HASTIT002), the Science and Technology Project of Henan Province (No. 192102310295), the Key Program in Universities of Henan Province (No. 19A150046), and the Key Program of Xuchang City (No. 2019-JC-02).

Ethyl 5-formyl-3,4-dimethyl-pyrrole-2-carboxylate and rhodamine B hydrazide were used to synthesize a rhodamine derivative R1. Notably, the as-synthesized R1 displayed great sensitivity and selectivity, which was utilized to be an off-on fluorescence probe for Cu2+ detectionin mediums that contained water. Besides, the Cu2+ ions limit of detection (LOD) was 0.201 μmol·L-1, and R1 was able to sense Cu2+ by "naked-eye" according to the change in color to pink from colorless. In addition, Cu2+ detection was assessed within the actual water samples for testing the probe actual application.

Key words: fluorescent probe, rhodamine, pyrrole, Cu2+