Chinese Journal of Applied Chemistry ›› 2021, Vol. 38 ›› Issue (11): 1503-1511.DOI: 10.19894/j.issn.1000-0518.200372

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Synthesis of Water Soluble Methoxynaphthene Hemicine for Detection of Chromium(Ⅲ) Ion

HUANG Yi-Wen1, WANG Li-Yan1, ZHAO Bing1,2, SONG Bo1*   

  1. 1College of Chemistry and Chemical Engineering, Qiqihar University, Qiqihar 161006, China;
    2Heilongjiang Provincial Key Laboratory of Surface Active Agent and Auxiliary, Qiqihar 161006, China
  • Received:2020-12-10 Accepted:2021-06-11 Published:2021-11-01 Online:2022-01-01
  • Supported by:
    National Natural Science Foundation of China (No.21978140), the Joint Guidance Project of Science Foundation of Heilongjiang Province (No.LH2019B021) and the Basic Business Special Project of Heilongjiang Provincial Department of Education (No.15209210)

Abstract: A water-soluble fluorescent probe D based on a derivative of indolevinyl hemicyanine was designed and synthesized. Experimental evidence shows that probe D could be used to identify Cr3+ with naked eyes in distilled water and 4-hydroxyethylpiperazine ethanesulfonic acid (HEPES) buffer. The specific recognition performance of probe D for Cr3+ was determined by ultraviolet-visible (UV-Vis) absorption spectroscopy and fluorescence emission spectroscopy. The results prove that the recognition of probe D for Cr3+ will not be impacted by other metal cations, and the complexation ratio of probe D and Cr3+ is 1∶1. The detection limit is 0.89×10-8 mol/L which is lower than the Cr3+ content (9.60×10-8 mol/L) in the drinking water standard recommended by the World Health Organization (WHO), demonstrating the sensitivity and specificity of probe D for Cr3+. Fluorescence emission spectroscopy was used to detect Cr3+ content in different water samples. The testing results show that probe D could analyze Cr3+ quantitatively under actual conditions, indicating its potential in the practical application.

Key words: Fluorescent probe, Water soluble, Chromium(Ⅲ) ion probe, Indole hemicyanine, Methoxynaphthalene

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