A Switch-On fluorescent probe for detection of mesotrione based on the straightforward cleavage of carbon-nitrogen double bond of Schiff base

Liu, Yulong; Li, Lü; Yue, Mingli; Yang, Liu; Sun, Fang; Xu, Guoqiang; Fu, Ying; Ye, Fei

doi:10.1016/j.cej.2021.132758

Cited by 21 publications

(17 citation statements)

References 54 publications

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“…It was found that the LUMO energy levels of isoxaflutole and mesotrione were lower than those of other pesticides (glyphosate, oxyfluorfen, pyrazoxyfen and cypermethrin), indicating that the electron affinities of isoxaflutole with the -CF 3 electron-withdrawing group and mesotrione with the -NO 2 electron-withdrawing group were relatively higher than those of other pesticides. Meanwhile, their LUMO energy levels were between the HOMO and LUMO energy levels of MMN , which could cause the transition of electrons from the LUMO orbital of MMN to the LUMO orbitals of isoxaflutole and mesotrione in the excited state [ 32 , 33 , 34 , 35 , 36 , 37 ]. The transition of electrons from the LUMO orbital of MMN in the excited state to the LUMO of isoxaflutole prevented the electrons from returning to the HOMO orbital of MMN , leading to the phenomenon of fluorescence quenching in the recognition of isoxaflutole.…”

Section: Resultsmentioning

confidence: 99%

A Multifunctional and Fast-Response Lysosome-Targetable Fluorescent Probe for Monitoring pH and Isoxaflutole

Yang

Liu

Yue

et al. 2022

IJMS

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A new chemosensor, namely N-(2-morpholinoethyl)acetamide-4-morpholine-1,8-naphthimide (MMN), was designed and synthesized through an amidation reaction. MMN was fabricated as a multifunctional fluorescent probe for monitoring pH and isoxaflutole. MMN exhibited excellent stability in MeCN/H2O (v/v, 9/1), with an obvious “off–on” fluorescence response toward pH changes due to intramolecular charge transfer (ICT), where the linear response ranges of MMN in the weakly acidic system were from 4.2 to 5.0 and from 5.0 to 6.0 with apparent pKa = 4.62 ± 0.02 and 5.43 ± 0.02. Based on morpholine as the lysosome targetable unit, MMN could selectively locate lysosomes in live cells. MMN also successfully detected the presence of H+ in test papers. Finally, MMN could specifically recognize isoxaflutole at a detection limit of 0.88 μM. A possible sensing mechanism was identified based on density function theory calculations. These results indicate that MMN could be a superior potential chemosensor for detecting pH and isoxaflutole selectively and sensitively and could be used in real sample detection.

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Section: Resultsmentioning

confidence: 99%

A Multifunctional and Fast-Response Lysosome-Targetable Fluorescent Probe for Monitoring pH and Isoxaflutole

Yang

Liu

Yue

et al. 2022

IJMS

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“…For quantitative analysis, the fluorescence intensities of BHMH were recorded in various concentrations of Cu 2+ or Fe 3+ in DMSO/HEPES (1:4, v/v, pH = 6.0) (Figure ). Based on the good relationship between BHMH and Cu 2+ (0–5 μM) or Fe 3+ (0–18 μM), the limits of detection (LODs) of BHMH for Cu 2+ and Fe 3+ were calculated as 9.05 and 48 nM, respectively, according to the reported equation (LOD = 3σ/ k , where k is the slope of the calibration curve and σ is the standard deviation of the blank solution). − The quantum yield (Φ F ) of BHMH was 0.73. The quantum yield of the standard (here, rhodamine-6G in DMSO) was 0.94.…”

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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“…This might be attributed to the further promoted non-radiative Article migration caused by -C=N moieties. 25,26 This result encouraged us to further investigate the photothermal conversion of P-CD plastics. The absorbance spectra were first measured as this is a crucial parameter for photothermal conversion (Figure 4A).…”

Section: Photothermal Conversion Of P-cd Plasticmentioning

confidence: 96%

Constructing ultra-stable photothermal plastics assisted by carbon dots with photocaged reactivity

Wan

Wang

Guo

et al. 2022

Matter

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A Switch-On fluorescent probe for detection of mesotrione based on the straightforward cleavage of carbon-nitrogen double bond of Schiff base

Cited by 21 publications

References 54 publications

A Multifunctional and Fast-Response Lysosome-Targetable Fluorescent Probe for Monitoring pH and Isoxaflutole

A Multifunctional and Fast-Response Lysosome-Targetable Fluorescent Probe for Monitoring pH and Isoxaflutole

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

Constructing ultra-stable photothermal plastics assisted by carbon dots with photocaged reactivity

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