A reversible competition colorimetric assay for the detection of biothiols based on ruthenium-containing complex

Hao, Yuanqiang; Xiong, Dandan; Wang, Liqiang; Zhou, Binbin; Liu, You‐Nian

doi:10.1016/j.talanta.2013.04.076

Cited by 33 publications

(13 citation statements)

References 36 publications

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“…In the human body, methylmercury can lead to serious symptoms, such as cognitive and motor disorders, neurological impairments, brain damage, and even death [146,147,148]. These environmental and biological problems have prompted the rapid development of techniques for sensing mercury [149,150,151,152,153]. Until present, many reaction-based fluorescent probes for Hg 2+ have been developed based on various Hg 2+ -induced chemical processes [154,155,156], such as desulfation or deselenization processes, desulfation and cyclization processes, thiol elimination process, and the oxymercuration−elimination of vinyl/alkyne ether.…”

Section: Mof-based Chemodosimeters For Ionsmentioning

confidence: 99%

Recent Progress in Metal–Organic Framework (MOF) Based Luminescent Chemodosimeters

et al. 2019

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Metal–organic frameworks (MOFs), as a class of crystalline hybrid architectures, consist of metal ions and organic ligands and have displayed great potential in luminescent sensing applications due to their tunable structures and unique photophysical properties. Until now, many studies have been reported on the development of MOF-based luminescent sensors, which can be classified into two major categories: MOF chemosensors based on reversible host–guest interactions and MOF chemodosimeters based on the irreversible reactions between targets with a probe. In this review, we summarize the recently developed luminescent MOF-based chemodosimeters for various analytes, including H2S, HClO, biothiols, fluoride ions, redox-active biomolecules, Hg2+, and CN−. In addition, some remaining challenges and future perspectives in this area are also discussed.

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Section: Mof-based Chemodosimeters For Ionsmentioning

confidence: 99%

Recent Progress in Metal–Organic Framework (MOF) Based Luminescent Chemodosimeters

et al. 2019

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“…bearing polymers that specifically bind to mercury ions 53 Finally, NC-Dots @Chit were subjected to a fluorine-doped tin oxide (FTO)-based glass test strip as nanoprobes by encapsulating them in an alginate hydrogel (0.5 × 0.5 cm) ( Figure 5a). As presented in Figure 5b, NC-Dots @Chit -alginate hydrogel exhibits bright blue fluorescence when irradiated with UV light at 365 nm.…”

Section: 3748−50mentioning

confidence: 99%

Naked eye and smartphone applicable detection of toxic mercury ions using fluorescent carbon nanodots

Baç¹,

Genç²

2017

Turk J Chem

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Chitosan passivated carbon nanodots (C-Dots CHIT ) were synthesized from expired molasses via a simple and green thermal synthesis procedure. As-synthesized C-Dots were nitrogen-doped (NC-Dots CHIT ) by posttreatment with liquid ammonia and used as nanoprobes for fluorometric detection of mercury ions (Hg(II) aq.) . Fluorescence response of NC-Dots CHIT in the presence of mercury was evaluated and compared with that of the polyethylene glycol passivated C-Dots P EG . This sensing strategy using NC-Dots CHIT displayed a wide linear working range from 1.25 µ g/mL to 43.54 µ g/mL with a detection limit of 1.41 µ g/mL. The fluorescence of C-Dots P EG did not show any significant change upon mercury addition. Selectivity of as-synthesized NC-Dots CHIT to Hg(II) aq. was assessed by comparing the level of fluorescence quenching in the presence of four other divalent cations (cadmium(II), zinc(II), nickel(II), and copper(II)).Finally, synthesized nanoprobes were embedded into the cross-linked alginate hydrogels and test strips were formed on the FTO-coated glass. Images captured under a UV light source ( λ exc: 365 nm) were successfully processed by a smartphone application. Color codes generated by the app showed a close resemblance to the data gathered from fluorescence spectroscopy. The proposed detection system was applied satisfactorily to both a certified calibration standard and real water samples. The methodology developed within this study could be a potential candidate for detection of mercury concentration in water samples with high recovery rates reaching up to 98%. This smartphone applicable detection platform that uses carbon nanodots as cheap yet sensitive nanoprobes could lead to more advanced lab-on-site systems for water or food sample analysis that can be performed by anyone, anywhere, anytime.

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“…In comparison with other methods, the colorimetric method has garnered extensive attention due to its superior responsiveness, portability, and practicality with no need for expensive and cumbersome instruments (Yan et al, 2020 ). Additionally, the detection result is easy to read out with visual inspection (Hao et al, 2013 ; Fan et al, 2017 ). In some research, a colorimetric assay has been developed for the detection of SA using TiO 2 NPs.…”

Section: Introductionmentioning

confidence: 99%

Colorimetric Detection of Salicylic Acid in Aspirin Using MIL-53(Fe) Nanozyme

et al. 2020

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The impurity of salicylic acid (SA) in aspirin is a required inspection item for drug quality control. Since free SA is significantly toxic for humans, the content determination of free SA is absolutely necessary to ensure people's health. In this work, a facile colorimetric method was developed for the detection of SA in aspirin by utilizing the MIL-53(Fe) nanozyme. As MIL-53(Fe) possesses enzyme mimicking catalytic activity, 3,3,5,5-tetramethylbenzidine (TMB) can be easily oxidized to blue-oxidized TMB (oxTMB) with the existence of H 2 O 2. Moreover, an inhibition effect on the catalytic activity of the MIL-53(Fe) nanozyme is induced due to the specific complexation between SA and Fe 3+ in the center of MIL-53(Fe), which results in a lighter color in the oxTMB. The color change of oxTMB can be seen easily by the naked eye with the addition of different concentrations of SA. Thus, a simple colorimetric platform was established for effectively monitoring SA. A good linear relationship (R 2 = 0.9990) was obtained in the concentration range of 0.4-28 µmol L −1 , and the detection limit was 0.26 µmol L −1. In particular, the rationally designed system has been well-applied to the detection of SA impurity in aspirin. Satisfyingly, the detection results are highly in accord with those of HPLC. This novel colorimetric platform broadens the application prospects of nanozymes in the field of pharmaceutical analysis.

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A reversible competition colorimetric assay for the detection of biothiols based on ruthenium-containing complex

Cited by 33 publications

References 36 publications

Recent Progress in Metal–Organic Framework (MOF) Based Luminescent Chemodosimeters

Recent Progress in Metal–Organic Framework (MOF) Based Luminescent Chemodosimeters

Naked eye and smartphone applicable detection of toxic mercury ions using fluorescent carbon nanodots

Colorimetric Detection of Salicylic Acid in Aspirin Using MIL-53(Fe) Nanozyme

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