A simple benzimidazole styryl-based colorimetric chemosensor for dual sensing application

Phapale, Daulat; Kushwaha, Archana; Das, Dipanwita

doi:10.1016/j.saa.2019.02.009

Cited by 20 publications

(5 citation statements)

References 69 publications

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“…Insignificant color change was observed for Ag + , Cu 2+ , Pb 2+ , Fe 2+ , and Fe 3+ ions that nevertheless showed weak fluorescence response. This notable color change of chemosensor 2CND with the addition of Sn 2+ was due to the dissociation of −OH protons and the inhibited photoinduced electron transfer (PET) mechanism which arose in 2CND –Sn 2+ complex . The deprotonated functional groups absorb light of a given wavelength in the visible region, which makes the color transformation (Figure ).…”

Section: Resultsmentioning

confidence: 99%

Naphthoquinone-Dopamine Linked Colorimetric and Fluorescence Chemosensor for Selective Detection of Sn²⁺ Ion in Aqueous Medium and Its Bio-Imaging Applications

Ravichandiran

Prabakaran

Bella³

et al. 2020

ACS Sustainable Chem. Eng.

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A simple naphthoquinone−dopamine hybrid (2CND) was designed and fabricated as a colorimetric and fluorescence chemosensor for the selective recognition of Sn 2+ in the aqueous medium. This simply accessible chemosensor was prepared by connecting of naphthoquinone acceptor and dopamine donor moieties via Michael-like addition reaction. The chemosensor 2CND showed a turn-on fluorescence response which operated through the inhibited photoinduced electron transfer effect. The sensor probe shows remarkable performance, such as high selectivity, sensitivity, excellent water solubility, and rapid response to Sn 2+ (less than 5 s). The detection mechanism of the 2CND−Sn 2+ complex was supported by FT-IR analysis, 1 H NMR titration, and DFT calculations. Besides, the 1:1 binding stoichiometry was confirmed by the ESI-MS spectral analysis. Furthermore, the chemosensor 2CND has been successfully employed as a fluorescence probe to monitor trace Sn 2+ in live cells and zebrafish. The sensor probe 2CND could serve as an effective fluorescence bioimaging probe for the discriminative detection of diseased and normal human cells.

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Section: Resultsmentioning

confidence: 99%

Naphthoquinone-Dopamine Linked Colorimetric and Fluorescence Chemosensor for Selective Detection of Sn²⁺ Ion in Aqueous Medium and Its Bio-Imaging Applications

Ravichandiran

Prabakaran

Bella³

et al. 2020

ACS Sustainable Chem. Eng.

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“…In addition, the deprotonated groups absorb the suitable wavelength of light in the visible region, which induces the color change. The other reason could be that the charge transfer occurred between the 2HPN –Fe 2+ complex via π conjugation . The process of color change between 2HPN and Fe 2+ occurred within 3 min, and the solution pH was measured as ∼6.5–7.0 (for Fe 2+ , pH ∼6.7).…”

Section: Resultsmentioning

confidence: 99%

“…The other reason could be that the charge transfer occurred between the 2HPN−Fe 2+ complex via π conjugation. 41 The process of color change between 2HPN and Fe 2+ occurred within 3 min, and the solution pH was measured as ∼6.5−7.0 (for Fe 2+ , pH ∼6.7).…”

Section: ■ Experimental Sectionmentioning

confidence: 99%

Naphthoquinone-Based Colorimetric and Fluorometric Dual-Channel Chemosensor for the Detection of Fe²⁺ Ion and Its Application in Bio-Imaging of Live Cells and Zebrafish

Ravichandiran

Boguszewska-Czubara

Masłyk

et al. 2019

ACS Sustainable Chem. Eng.

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A new naphthoquinone-based chemosensor 2-((3hydroxyphenyl)amino)-3-(phenylthio)naphthalene-1,4-dione (2HPN) was successfully synthesized for the selective detection of Fe 2+ . The sensing property of the chemosensor 2HPN was evaluated in aqueous acetonitrile (CH 3 CN) medium by a fluorescence emission method. The metal-binding studies of the ligand 2HPN showed selective "turn-on" fluorescence responses for Fe 2+ (K a = 1.0 × 10 6 M −1 ). The detection limit of the ligand 2HPN to Fe 2+ was calculated to be 0.272 μM, which is lower than the World Health Organization recommendation (0.3 mg/L) in drinking water. The most significant feature of the obtained chemosensor 2HPN is its ability to sense Fe 2+ via naked-eye detection over various metal ions. The chemosensor operated via the intramolecular charge transfer effect, which was supported by Fourier transform infrared analysis, NMR titrations, and quantum chemical calculations. The efficiency of the chemosensor 2HPN as a biomarker for Fe 2+ was successfully proven by imaging in human cancer cells and zebrafish. Thus, the chemosensor 2HPN could be a useful biomarker for the precise sensing of Fe 2+ in clinical diagnosis.

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“…However, in the literature, the detection studies of these anions do not typically provide a specific value for the LOQ. Regarding the estimated LOD value, it is worth noting that the LOQ values for SO 4 2− and HSO 4 − anions showed values below the maximum levels allowed by the United States Environmental Protection Agency [43] and the World Health Organization (WHO) [44], which are 500 mg•L −1 and 250 mg•L −1 , respectively, whereas there is no established standard for CO 3 2− and HCO 3 − set by regulatory agencies. Thus, the values determined in this study for the quantification of the target anions are well below the established maximum concentrations allowed.…”

Section: Fluorescent Detection Of Anions Using Cdte-cya Qdsmentioning

confidence: 99%

Development of Fluorescent Sensors for Biorelevant Anions in Aqueous Media Using Positively Charged Quantum Dots

Silva,

Pereira,

Pereira

et al. 2024

Micromachines

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Quantum dots (QDs) have captured the attention of the scientific community due to their unique optical and electronic properties, leading to extensive research for different applications. They have also been employed as sensors for ionic species owing to their sensing properties. Detecting anionic species in an aqueous medium is a challenge because the polar nature of water weakens the interactions between sensors and ions. The anions bicarbonate (HCO3−), carbonate (CO32−), sulfate (SO42−), and bisulfate (HSO4−) play a crucial role in various physiological, environmental, and industrial processes, influencing the regulation of biological fluids, ocean acidification, and corrosion processes. Therefore, it is necessary to develop approaches capable of detecting these anions with high sensitivity. This study utilized CdTe QDs stabilized with cysteamine (CdTe-CYA) as a fluorescent sensor for these anions. The QDs exhibited favorable optical properties and high photostability. The results revealed a gradual increase in the QDs’ emission intensity with successive anion additions, indicating the sensitivity of CdTe-CYA to the anions. The sensor also exhibited selectivity toward the target ions, with good limits of detection (LODs) and quantification (LOQs). Thus, CdTe-CYA QDs show potential as fluorescent sensors for monitoring the target anions in water sources.

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A simple benzimidazole styryl-based colorimetric chemosensor for dual sensing application

Cited by 20 publications

References 69 publications

Naphthoquinone-Dopamine Linked Colorimetric and Fluorescence Chemosensor for Selective Detection of Sn²⁺ Ion in Aqueous Medium and Its Bio-Imaging Applications

Naphthoquinone-Dopamine Linked Colorimetric and Fluorescence Chemosensor for Selective Detection of Sn²⁺ Ion in Aqueous Medium and Its Bio-Imaging Applications

Naphthoquinone-Based Colorimetric and Fluorometric Dual-Channel Chemosensor for the Detection of Fe²⁺ Ion and Its Application in Bio-Imaging of Live Cells and Zebrafish

Development of Fluorescent Sensors for Biorelevant Anions in Aqueous Media Using Positively Charged Quantum Dots

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A simple benzimidazole styryl-based colorimetric chemosensor for dual sensing application

Cited by 20 publications

References 69 publications

Naphthoquinone-Dopamine Linked Colorimetric and Fluorescence Chemosensor for Selective Detection of Sn2+ Ion in Aqueous Medium and Its Bio-Imaging Applications

Naphthoquinone-Dopamine Linked Colorimetric and Fluorescence Chemosensor for Selective Detection of Sn2+ Ion in Aqueous Medium and Its Bio-Imaging Applications

Naphthoquinone-Based Colorimetric and Fluorometric Dual-Channel Chemosensor for the Detection of Fe2+ Ion and Its Application in Bio-Imaging of Live Cells and Zebrafish

Development of Fluorescent Sensors for Biorelevant Anions in Aqueous Media Using Positively Charged Quantum Dots

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Naphthoquinone-Dopamine Linked Colorimetric and Fluorescence Chemosensor for Selective Detection of Sn²⁺ Ion in Aqueous Medium and Its Bio-Imaging Applications

Naphthoquinone-Dopamine Linked Colorimetric and Fluorescence Chemosensor for Selective Detection of Sn²⁺ Ion in Aqueous Medium and Its Bio-Imaging Applications

Naphthoquinone-Based Colorimetric and Fluorometric Dual-Channel Chemosensor for the Detection of Fe²⁺ Ion and Its Application in Bio-Imaging of Live Cells and Zebrafish