Colorimetric Co<sup>2+</sup> sensor based on an anionic pyridylazo dye and a cationic polyelectrolyte in aqueous solution

Inoue, Koshiro; Aikawa, Shunichi; Sakamaki, Masaru; Fukushima, Yasumasa

doi:10.1002/pi.5682

Cited by 15 publications

(7 citation statements)

References 40 publications

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“…From the fluorescence titration profiles, the limit of detection (LOD) of L for Co 2+ was calculated to be 0.26 µM based on the equation of 3σ/slope [47]. This is lower than the recommended value for the U.S. (United States Environmental Protection Agency, secondary drinking water regulation) and Australia (National Health and Medical Research Council).…”

Section: Resultsmentioning

confidence: 99%

A New Fluorescent Chemosensor for Cobalt(II) Ions in Living Cells Based on 1,8-Naphthalimide

Liu

Yang

et al. 2019

Molecules

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In this work, a highly selective fluorescent chemosensor N-(2-(2-butyl-1,3-dioxo-2,3-dihydro-1H-benzo[de]isoquinolin-6-yl)hydrazine-1-carbonothioyl)benzamide (L) was prepared and characterized. An assay to detect the presence of cobalt(II) ions was developed by utilizing turn-on fluorescence enhancement with visual colorimetric response. Upon treatment with Co2+, a remarkable fluorescence enhancement located at 450 nm was visible to naked eyes accompanied with a distinct color change (from pink to colorless) in a CH3CN/HEPES (4/1, v/v, pH = 7.4) solution due to the formation of a 1:1 complex at room temperature. In addition, the linear concentration range for Co2+ was 0–25 µM with the limit of detection down to 0.26 µM. Thus, a highly sensitive fluorescent method based on chelation-assisted fluorescence enhancement was developed for the trace-level detection of Co2+. The sensor was found to be highly selective toward Co2+ ions with a large number of coexisting ions. Furthermore, the L probe can serve as a fluorescent sensor for Co2+ detecting in biological environments, demonstrating its low toxic properties to organisms and good cell permeability in live cell imaging.

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Section: Resultsmentioning

confidence: 99%

A New Fluorescent Chemosensor for Cobalt(II) Ions in Living Cells Based on 1,8-Naphthalimide

Liu

Yang

et al. 2019

Molecules

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“…Not only is such work still important as a probe of polymer dynamics, but also many applications involve PE interactions with small molecules. Dyes mixed with macromolecules for fabric coloring are perhaps the most obvious and oldest area of applied interest in this area, but recent interest in dilute and semidilute solutions has included potential uses in drug and protein delivery and the controlled release of entrapped molecules; the use of PEs in waste water treatment of textile plants, − where dye removal from the waste stream is important for both safety and dye recovery; solution-based selective colorimetric sensors for various ions; − dye uptake by PE-micelle coacervates; and using dyes to control the coacervation and precipitation of oppositely charged PEs in solutions . Finally, the specific PEs studied here, poly(styrene sulfonate) (PSS) and poly(diallydimethylammonium) chloride (PDDA) (Figure ), are commercially significant in their own right and have been widely studied and characterized; e.g.…”

Section: Introductionmentioning

confidence: 99%

Molecular Dynamics Simulations of Rhodamine B Zwitterion Diffusion in Polyelectrolyte Solutions

Walhout

Dutagaci

et al. 2022

J. Phys. Chem. B

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Polyelectrolytes continue to find wide interest and application in science and engineering, including areas such as water purification, drug delivery, and multilayer thin films. We have been interested in the dynamics of small molecules in a variety of polyelectrolyte (PE) environments; in this paper, we report simulations and analysis of the small dye molecule rhodamine B (RB) in several very simple polyelectrolyte solutions. Translational diffusion of the RB zwitterion has been measured in fully atomistic, 2 μs long molecular dynamics simulations in four different polyelectrolyte solutions. Two solutions contain the common polyanion sodium poly(styrene sulfonate) (PSS), one with a 30mer chain and the other with 10 trimers. The other two solutions contain the common polycation poly(allyldimethylammonium) chloride (PDDA), one with two 15-mers and the other with 10 trimers. RB diffusion was also simulated in several polymer-free solutions to verify its known experimental value for the translational diffusion coefficient, D RB , of 4.7 × 10 −6 cm 2 /s at 300 K. RB diffusion was slowed in all four simulated PE solutions, but to varying degrees. D RB values of 3.07 × 10 −6 and 3.22 × 10 −6 cm 2 /s were found in PSS 30-mer and PSS trimer solutions, respectively, whereas PDDA 15-mer and trimer solutions yielded values of 2.19 × 10 −6 and 3.34 × 10 −6 cm 2 /s. Significant associations between RB and the PEs were analyzed and interpreted via a two-state diffusion model (bound and free diffusion) that describes the data well. Crowder size effects and anomalous diffusion were also analyzed. Finally, RB translation along the polyelectrolytes during association was characterized.

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“… 22,23 PDADMAC causes the aggregation of an anionic dye by electrostatic interactions between them PDADMAC and an anionic dye, and consequently the dye has the potential to exhibit a new colorimetric response and sensing properties 24,25 . Our previous reports stated that the combination of an anionic dye and PDADMAC had sensing properties which were different to the original anionic dye 26‐32 …”

Section: Introductionmentioning

confidence: 99%

Colorimetric detection of Mn(ii) based on a mixture of an anionic pyridylazo dye and a cationic polyelectrolyte in aqueous solution

Fukushima

Aikawa

2020

Coloration Technology

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We have developed a simple and valuable method for the construction of a colorimetric chemosensor for detecting Mn(ii) in aqueous media. The chemosensor was prepared by mixing two commercial products, an anionic organic dye, 2-(5-nitro-2-pyridylazo)-5-(N-propyl-N-sulphopropylamino)phenol (Nitro-PAPS) and a cationic polyelectrolyte, poly(diallyldimethylammonium chloride) (PDADMAC). Upon gradual addition of Mn(ii) to the chemosensor, the absorption spectra showed a remarkable bathochromic shift concomitantly with a distinct colour change from yellow to blue-green, while Nitro-PAPS alone could not detect Mn(ii) in a colorimetric method. PDADMAC played a key role in sensing Mn(ii) for the mixture. The colour change might be due to the formation of the aggregate obtained through electrostatic interactions of a Nitro-PAPS-based Mn(ii) complex with PDADMAC. This investigation can inform the development of a new chemosensor by the combination of an anionic dye and a cationic polyelectrolyte.

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Colorimetric Co²⁺ sensor based on an anionic pyridylazo dye and a cationic polyelectrolyte in aqueous solution

Cited by 15 publications

References 40 publications

A New Fluorescent Chemosensor for Cobalt(II) Ions in Living Cells Based on 1,8-Naphthalimide

A New Fluorescent Chemosensor for Cobalt(II) Ions in Living Cells Based on 1,8-Naphthalimide

Molecular Dynamics Simulations of Rhodamine B Zwitterion Diffusion in Polyelectrolyte Solutions

Colorimetric detection of Mn(ii) based on a mixture of an anionic pyridylazo dye and a cationic polyelectrolyte in aqueous solution

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Colorimetric Co2+ sensor based on an anionic pyridylazo dye and a cationic polyelectrolyte in aqueous solution

Cited by 15 publications

References 40 publications

A New Fluorescent Chemosensor for Cobalt(II) Ions in Living Cells Based on 1,8-Naphthalimide

A New Fluorescent Chemosensor for Cobalt(II) Ions in Living Cells Based on 1,8-Naphthalimide

Molecular Dynamics Simulations of Rhodamine B Zwitterion Diffusion in Polyelectrolyte Solutions

Colorimetric detection of Mn(ii) based on a mixture of an anionic pyridylazo dye and a cationic polyelectrolyte in aqueous solution

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Colorimetric Co²⁺ sensor based on an anionic pyridylazo dye and a cationic polyelectrolyte in aqueous solution