An ultrasensitive colorimetric and fluorescent “turn-on” chemosensor based on Schiff base for the detection of Cu2+ in the aqueous medium

We designed and synthesized a fluorescent “turn-on” and colorimetric chemosensor ((E)-1-((p-tolylimino)methyl)naphthalen-2-ol) SB . The structure of the synthesized chemosensor was investigated by 1 H NMR, FT-IR, and fluorescence spectroscopy, and its sensing properties were studied toward Mn 2+ , C...

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Published in:Environmental monitoring and assessment 2023-06, Vol.195 (6), p.633-633, Article 633
Main Authors: Khan, Sikandar, Muhammad, Mian, Kamran, Abdul Waheed, Al-Saidi, Hamed M., Alharthi, Salman S., Algethami, Jari S.
Format: Article
Language:English
Subjects:
Aluminum
Analytical methods
Aqueous solutions
Atmospheric Protection/Air Quality Control/Air Pollution
Calcium ions
Carbon dioxide
Chemical sensors
Chemoreceptors
Cobalt
Colorimetry
Copper
Detection
Earth and Environmental Science
Ecology
Ecotoxicology
Environment
Environmental Management
Environmental monitoring
Environmental science
Fluorescence
Fluorescence spectroscopy
Fourier transforms
Geometry
Imines
Infrared spectroscopy
Investigations
Ions
Lead
Magnesium
Monitoring/Environmental Analysis
NMR
Nuclear magnetic resonance
Synthesis
Titration
Zinc
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description We designed and synthesized a fluorescent “turn-on” and colorimetric chemosensor ((E)-1-((p-tolylimino)methyl)naphthalen-2-ol) SB . The structure of the synthesized chemosensor was investigated by 1 H NMR, FT-IR, and fluorescence spectroscopy, and its sensing properties were studied toward Mn 2+ , Cu 2+ , Pb 2+ , Cd 2+ , Na + , Ni 2+ , Al 3+ , K + , Ag + , Zn 2+ , Co 2+ , Cr 3+ , Hg 2+ , Ca 2+ , and Mg 2+ . SB showed an excellent colorimetric (yellow to yellowish brown) in MeOH and fluorescence “turn-on” sensing response to Cu 2+ in MeOH/Water (10/90, v/v) media. The sensing mechanism of SB toward Cu 2+ was investigated by FT-IR, 1 H NMR titration, DFT studies, and Job’s plot analysis. The detection limit was calculated to be very low 0.0025 µg mL −1 (0.0025 ppm). Furthermore, the test strip containing SB also showed excellent selectivity and sensitivity toward Cu 2+ in a solution medium and when supported on a solid medium.
doi_str_mv 10.1007/s10661-023-11260-3
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The structure of the synthesized chemosensor was investigated by 1 H NMR, FT-IR, and fluorescence spectroscopy, and its sensing properties were studied toward Mn 2+ , Cu 2+ , Pb 2+ , Cd 2+ , Na + , Ni 2+ , Al 3+ , K + , Ag + , Zn 2+ , Co 2+ , Cr 3+ , Hg 2+ , Ca 2+ , and Mg 2+ . SB showed an excellent colorimetric (yellow to yellowish brown) in MeOH and fluorescence “turn-on” sensing response to Cu 2+ in MeOH/Water (10/90, v/v) media. The sensing mechanism of SB toward Cu 2+ was investigated by FT-IR, 1 H NMR titration, DFT studies, and Job’s plot analysis. The detection limit was calculated to be very low 0.0025 µg mL −1 (0.0025 ppm). 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The structure of the synthesized chemosensor was investigated by 1 H NMR, FT-IR, and fluorescence spectroscopy, and its sensing properties were studied toward Mn 2+ , Cu 2+ , Pb 2+ , Cd 2+ , Na + , Ni 2+ , Al 3+ , K + , Ag + , Zn 2+ , Co 2+ , Cr 3+ , Hg 2+ , Ca 2+ , and Mg 2+ . SB showed an excellent colorimetric (yellow to yellowish brown) in MeOH and fluorescence “turn-on” sensing response to Cu 2+ in MeOH/Water (10/90, v/v) media. The sensing mechanism of SB toward Cu 2+ was investigated by FT-IR, 1 H NMR titration, DFT studies, and Job’s plot analysis. The detection limit was calculated to be very low 0.0025 µg mL −1 (0.0025 ppm). Furthermore, the test strip containing SB also showed excellent selectivity and sensitivity toward Cu 2+ in a solution medium and when supported on a solid medium.</abstract><cop>Cham</cop><pub>Springer International Publishing</pub><doi>10.1007/s10661-023-11260-3</doi><tpages>1</tpages></addata></record>
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subjects Aluminum
Analytical methods
Aqueous solutions
Atmospheric Protection/Air Quality Control/Air Pollution
Calcium ions
Carbon dioxide
Chemical sensors
Chemoreceptors
Cobalt
Colorimetry
Copper
Detection
Earth and Environmental Science
Ecology
Ecotoxicology
Environment
Environmental Management
Environmental monitoring
Environmental science
Fluorescence
Fluorescence spectroscopy
Fourier transforms
Geometry
Imines
Infrared spectroscopy
Investigations
Ions
Lead
Magnesium
Monitoring/Environmental Analysis
NMR
Nuclear magnetic resonance
Synthesis
Titration
Zinc
title An ultrasensitive colorimetric and fluorescent “turn-on” chemosensor based on Schiff base for the detection of Cu2+ in the aqueous medium
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