A chemical probe capable for fluorescent and colorimetric detection to Cu2+ and CN− based on coordination and nucleophilic addition mechanism
•A novel salamo-like chemical sensor HL for continuous recognition of Cu2+ and CN− was synthesized.•The probe HL could recognize Cu2+ by dual channels, and the formed copper(II) complex could identify CN− through UV–visible spectrum and naked eye recognition.•The identification of CN− had a wide pH...
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| Published in: | Microchemical journal 2020-06, Vol.155, p.104801, Article 104801 |
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| Main Authors: | , , , , , |
| Format: | Article |
| Language: | eng |
| Subjects: | |
| Online Access: | Get full text |
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| Summary: | •A novel salamo-like chemical sensor HL for continuous recognition of Cu2+ and CN− was synthesized.•The probe HL could recognize Cu2+ by dual channels, and the formed copper(II) complex could identify CN− through UV–visible spectrum and naked eye recognition.•The identification of CN− had a wide pH range and could be used for the detection of CN− in realistic water samples.
A salamo-like chemical probe HL with novel structure for continuous recognition of Cu2+ and CN− was synthesized by Schiff base reaction. Some meticulous researches on the properties of probe HL had been carried out by UV–Vis spectra and fluorescence spectra, high-resolution mass spectra and nuclear magnetic resonance spectra. The probe HL could identify Cu2+ by dual channels, and the formed copper(II) complex L-Cu2+ could be used as a probe to recognize CN− in the visible region, and could realize naked eye recognition with color changed from bright yellow to red. Combining the color changes and smartphones, a cost-effective real-time detection method which named the RGB analysis method had been developed for on-site detection of CN− content. In addition, the lowest detection limit for Cu2+ and CN− could reach 2 × 10−8 M and 2.52 × 10−8 M, respectively. And a good recovery was obtained when determining the CN− in the real water samples.
A novel salamo-like chemical sensor HL for continuous recognition of Cu2+ and CN− was synthesized for the first time by Schiff base reaction of 2,3-dimethoxy-1,4-naphthalene dialdehyde and 2-[O-(1-ethyloxyamide)]oxime-6-methoxyphenol. The sensor can identify Cu2+ by dual channels, and the formed copper(II) complex L-Cu2+ can be used as a probe to recognize CN− in the visible region, and realized naked eye recognition. [Display omitted] |
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| ISSN: | 0026-265X 1095-9149 |