A dual-functional probe for sensing pH change and ratiometric detection of Cu2+

Wang, Jiang-Xu; Zhang, Xing; Tian, Zhen-Nan; Wu, Ding-Qi; Xiang, Yuanyuan; Li, Jinlong

doi:10.1016/j.saa.2020.118318

Cited by 16 publications

(5 citation statements)

References 57 publications

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“…These phenomena in the interaction with Cu 2+ and Fe 3+ further confirmed that the ESIPT process was inhibited and led to fluorescence quenching in BHMH , strongly indicating the deprotonation of the phenolic hydroxyl group. According to the above information, the possible mechanism of a complex interaction between BHMH and Cu 2+ or Fe 3+ is shown in Scheme . − …”

Section: Resultsmentioning

confidence: 99%

New Fluorescent Probes for the Sensitive Determination of Glyphosate in Food and Environmental Samples

Sun

Yang

et al. 2021

J. Agric. Food Chem.

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In this paper, a dual-functional probe, 2-(benzothiazol)-4-(3-hydroxy-4-methylphenyl) imino phenol (BHMH), was synthesized and characterized for the simultaneous detection of Cu2+ and Fe3+ in dimethyl sulfoxide/4-(2-hydroxyethyl)-1-piperazineethanesulfonic acid (DMSO/HEPES) (1:4, v/v, pH = 6.0). The limits of detections (LODs) for Cu2+ and Fe3+ were 9.05 and 48 nM, respectively. Based on the competitive coordination, the complex BHMH-Cu 2+ /Fe 3+ exhibited good sensitivity and selectivity for glyphosate. The LODs of BHMH-Cu 2+ and BHMH-Fe 3+ for glyphosate were 0.41 and 0.63 μM, respectively. The probe quantitatively detected glyphosate in tap water, Songhua River water, local water and soil, and food samples. The colorimetric on-site glyphosate sensing through the probe BHMH-Cu 2+ was also studied based on smartphones. BHMH and BHMH-Cu 2+ /Fe 3+ exhibited outstanding imaging capabilities for Cu2+, Fe3+, and glyphosate in living cells with low cytotoxicity, especially the first time for glyphosate.

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Section: Resultsmentioning

confidence: 99%

New Fluorescent Probes for the Sensitive Determination of Glyphosate in Food and Environmental Samples

Sun

Yang

et al. 2021

J. Agric. Food Chem.

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“…The color changes of the mixed solution containing different concentrations of Al 3+ were observed clearly under sunlight and 365 nm ultraviolet light (Figure 10). Enlightened by this, we conducted colorimetric experiments on Al 3+ by loading BHMMP on the test paper [61,62]. The test paper was soaped into BHMMP solutions, with various amounts of Al 3+ , and then dried naturally.…”

Section: Monitoring Al 3+ On Test Papermentioning

confidence: 99%

A Significant Fluorescence Turn-On Probe for the Recognition of Al3+ and Its Application

et al. 2022

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An easy prepared probe, BHMMP, was designed and synthesized, which displayed a significant fluorescence enhancement (over 38-fold) and obvious color change in the recognition of Al3+. The binding ratio of probe BHMMP to Al3+ was determined as 1:1, according to Job plot. The binding mechanism was fully clarified by the experiments, such as FT-IR spectrum, ESI–MS analysis, and 1H NMR titration. A DFT study further confirmed the binding mode of BHMMP to Al3+. The limit of detection (LOD) for Al3+ was determined as low as 0.70 µM, based on the fluorescence titration of BHMMP. Moreover, the results from real sample experiments, including real water samples, test papers, and cell images, well-demonstrated that BHMMP was capable of sensing Al3+ in environmental and biological systems.

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“…Under alkaline conditions, the BTH1 chemosensor with Cu 2+ developed a turn-on fluorescence because of ESIPT inhibition. Notably, this turn-on fluorescence strategy was successfully applied in the paper strip, and the LOD of Cu 2+ was 5 µM [67]. Li et al successfully developed a hydrazone functionality using coumarin (donor) and quinolinyl benzothiazole (acceptor)-based chemosensor (TQC) for Cu 2+ detection.…”

Section: Cu 2+ Ion Detectionmentioning

confidence: 99%

Paper-Based Fluorescence Chemosensors for Metal Ion Detection in Biological and Environmental Samples

Sivakumar

Lee

2021

BioChip J

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The recognition and detection of metal ions present in biological and environmental samples have attracted great attention in recent years. Various analytical techniques are used to detect metal ions. Among these, the fluorescence technique is among the emerging methods because of its simplicity, selectivity, and applicability to bioimaging. Thus, this review particularly explores paper-based fluorescence chemosensors involved in metal ion detection. Significantly, the first section addresses relevant research on metal ion detection involving various techniques. In the second section, several sensing strategies such as photoinduced electron transfer, fluorescence resonance energy transfer, intramolecular charge transfer, chelation enhanced fluorescence, excited-state intramolecular proton transfer, and aggregation-induced emission for the detection of target metal ions (aluminum, copper, iron, lead, mercury, and zinc) are investigated. The third section particularly discusses the role of fluorescence sensor materials (e.g., fluorescein, rhodamine, naphthalimide, BODIPY, carbon dots, quantum dots) involved in the detection processes and their advantages and limitations. Overall, this article reviews 90 research articles on paperbased fluorescence chemosensors for metal ion detection published until 2021.

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A dual-functional probe for sensing pH change and ratiometric detection of Cu2+

Cited by 16 publications

References 57 publications

New Fluorescent Probes for the Sensitive Determination of Glyphosate in Food and Environmental Samples

New Fluorescent Probes for the Sensitive Determination of Glyphosate in Food and Environmental Samples

A Significant Fluorescence Turn-On Probe for the Recognition of Al3+ and Its Application

Paper-Based Fluorescence Chemosensors for Metal Ion Detection in Biological and Environmental Samples

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