A Rhodamine-naphthalimide conjugated chemosensor for ratiometric detection Hg 2+ in actual aqueous samples

Xu, Naizhang; Liu, Mengmeng; Ye, Minan; Yao, Yue; Zhou, Yi; Wu, Guanzhi; Yang, Cheng

doi:10.1016/j.jlumin.2017.03.067

Cited by 22 publications

(9 citation statements)

References 37 publications

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“…Xu's laboratory synthesised Probe Hg-29 ( Fig. 25), which was employed for the ratiometric detection of Hg 2+ based on the FRET mechanism (Xu et al 2017). Robust association constant of 2.75 × 10 5 M −1 was calculated, and minuscule detection limit of 0.059 μM was determined in EtOH/HEPES (v/v, 9:1, pH 7.0) in the analytical presence of other analyte ions, viz K + , Mg 2+ , Mn 2+ , Fe 2+ , Ni 2+ , Ba 2+ , Co 2+ , Na + , Zn 2+ , Cu 2+ , Pb 2+ , Ca 2+ , Cd 2+ , Ag + , Cr 3+ , and Hg 2+ .…”

Section: Small-molecule Hg 2+ Probes Based On Naphthalimide and Rhodamentioning

confidence: 99%

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Fluorescent, colourimetric, and ratiometric probes based on diverse fluorophore motifs for mercuric(II) ion (Hg2+) sensing: highlights from 2011 to 2019

Aderinto

2020

Chem. Pap.

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Though it has not been shown to deliver any biological importance, mercuric(II) ion (Hg 2+) is a deleterious cation which poses grievous effects to the human body and/or the ecosystem, hence, the need for its sensitive and selective monitoring in both environmental and biological systems. Over the years, there has been a great deal of work in the use of fluorescent, colourimetric, and/or ratiometric probes for Hg 2+ recognition. Essentially, the purpose of this review article is to give an overview of the advances made in the constructions of such probes based on the works reported in the period from 2011 to 2019. Discussion in this review work has been tailored to the kinds of fluorophore scaffolds used for the constructions of the probes reported. Selected examples of probes under each fluorophore subcategory were discussed with mentions of the typically determined parameters in an analytical sensing operation, including modulation in fluorescence intensity, optimal pH, detection limit, and association constant. The environmental and biological application ends of the probes were also touched where necessary. Important generalisations and conclusions were given at the end of the review. This review article highlights 196 references. Keywords Mercuric(II) ion (Hg 2+) • Fluorescent probes • Colourimetric probes • Ratiometric probes • Hg 2+-selective probes • Sensing

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Section: Small-molecule Hg 2+ Probes Based On Naphthalimide and Rhodamentioning

confidence: 99%

“…Structure of Probe Hg-29(Xu et al 2017) Absorption (up) and fluorescent (down) spectra of Probe Hg-30 (2 μM) (inset) (HEPES/CH 3 CN, v/v = 20:80; pH 7.0)(Zhou et al 2013) …”

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confidence: 99%

Fluorescent, colourimetric, and ratiometric probes based on diverse fluorophore motifs for mercuric(II) ion (Hg2+) sensing: highlights from 2011 to 2019

Aderinto

2020

Chem. Pap.

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“…In Figure 6, the [QCy/Ag + ] complex approached its fluorescence quenching maximum at a molar fraction of 0.5, which confirms the 1:1 complexation stoichiometry of the [QCy/Ag + ] complex, as predicted by Job’s plot analysis [28]. Moreover, according to the Benesi–Hildebrand equation, 1/(A − A 0 ) of QCy at 619 nm showed a good linear relationship with 1/[Ag + ] (R 2 = 0.9990), and the association constant was calculated to be 1.47 × 10 4 M −1 from the slope and intercept of the equation obtained (Figure 7) [29], This result indicates that the QCy probe and Ag + generate a stable complex in a solution of EtOH and PBS (1:9, pH = 7.0).…”

Section: Resultsmentioning

confidence: 82%

A Sensitive Near-Infrared Fluorescent Probe for Detecting Heavy Metal Ag+ in Water Samples

Zhang

Yao

et al. 2019

Sensors

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Silver is a common catalyst in industrial production, and the frequent use of Ag+ can cause water pollution. Thus, the detection of Ag+ in the environment is necessary to determine the level of pollution from silver. In this work, we designed a new, highly selective near-infrared (NIR) fluorescent probe QCy to detect Ag+. The probe exhibits “turn-off” fluorescence quenching responses at 760 nm towards Ag+ over other relevant cations, with outstanding sensitivity and a low detection limit (0.03 µM), which is considerably lower than the standard of the World Health Organization (WHO) for drinking water (0.9 µM). Meanwhile, QCy showed a very good linearity at a low concentration of Ag+ with a ‘naked eye’ visible color change of solution from blue to red. The probe has been applied successfully for the detection of Ag+ in real water samples.

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“…However, most materials have only one of these properties but often not have both at the same time (Table S1, ESI†), such as no recognition properties but adsorption properties, 20–24 or, conversely, no adsorption properties but recognition properties. 25–29 We need to consider both the recognition and adsorption properties of fluorescent materials. In consequence, the synthesis of fluorescence probe materials as a means of detecting and removing toxic ions from aqueous solutions is vitally important.…”

Section: Introductionmentioning

confidence: 99%

Regulation of conjugate rigid plane structures for achieving transformation of fluorescence recognition properties

et al. 2022

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A Rhodamine-naphthalimide conjugated chemosensor for ratiometric detection Hg 2+ in actual aqueous samples

Cited by 22 publications

References 37 publications

Fluorescent, colourimetric, and ratiometric probes based on diverse fluorophore motifs for mercuric(II) ion (Hg2+) sensing: highlights from 2011 to 2019

Fluorescent, colourimetric, and ratiometric probes based on diverse fluorophore motifs for mercuric(II) ion (Hg2+) sensing: highlights from 2011 to 2019

A Sensitive Near-Infrared Fluorescent Probe for Detecting Heavy Metal Ag+ in Water Samples

Regulation of conjugate rigid plane structures for achieving transformation of fluorescence recognition properties

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