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Vol. 34, No. 8(3), S&M3042

Notice of retraction
Vol. 32, No. 8(2), S&M2292

Print: ISSN 0914-4935
Online: ISSN 2435-0869
Sensors and Materials
is an international peer-reviewed open access journal to provide a forum for researchers working in multidisciplinary fields of sensing technology.
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Sensors and Materials, Volume 35, Number 7(2) (2023)
Copyright(C) MYU K.K.
pp. 2281-2292
S&M3322 Research Paper
https://doi.org/10.18494/SAM4465
Published: July 14, 2023

A Novel Fluorescent Sensor Based on Copper Complex for Detection of Glyphosate [PDF]

Mianyuan Wu, Yanchao Yu, Qiye Liu, Jun You, and Wenju Wu

(Received April 26, 2023; Accepted June 6, 2023)

Keywords: fluorescent sensor, copper complex, glyphosate, ligand substitution

Ultrasensitive, reliable, and prompt prewarning of glyphosate (GLY) residue is essential to ensure environmental and food safety. Hence, a novel fluorescent sensor, N’-(7-(diethylamino)-2-oxo-2H-chromen-3-yl)methylene)-2-hydroxy-4-methoxybenzohydrazide (DCB), is proposed. It shows a significant and specific fluorescence quenching response to Cu2+ and forms a Cu2+ complex (DCS-Cu2+). More importantly, GLY can bind to Cu2+ more strongly than DCB, and the DCB-Cu2+ complex releases free DCB through competitive coordination. Thus, GLY can restore the fluorescence of DCB which has been extinguished by Cu2+. Through fluorescence enhancement, the DCB-Cu2+ complex shows a quick, specific, and sensitive response to GLY, and a good linear relationship between fluorescence intensities and GLY concentrations is found in the range of 0–11 μM with a limit of detection of 0.28 μM (47.34 ng/mL). Furthermore, the suggested sensor has been successfully used for the detection of GLY in actual samples.

Corresponding author: Yanchao Yu


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Cite this article
Mianyuan Wu, Yanchao Yu, Qiye Liu, Jun You, and Wenju Wu, A Novel Fluorescent Sensor Based on Copper Complex for Detection of Glyphosate, Sens. Mater., Vol. 35, No. 7, 2023, p. 2281-2292.



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