A simple rhodanine-based fluorescent sensor for mercury and copper: The recognition of Hg2+ in aqueous solution, and Hg2+/Cu2+ in organic solvent

2019 ◽  
Vol 372 ◽  
pp. 235-244 ◽  
Author(s):  
Sinan Bayindir
Keyword(s):  
Aqueous Solution ◽  
Organic Solvent ◽  
Fluorescent Sensor

scholarly journals A Novel Thiosemicarbazide-Based Fluorescent Chemosensor for Hypochlorite in Near-Perfect Aqueous Solution and Zebrafish

Chemosensors ◽  
2021 ◽  
Vol 9 (4) ◽  
pp. 65
Author(s):  
Minji Lee ◽  
Donghwan Choe ◽  
Soyoung Park ◽  
Hyeongjin Kim ◽  
Soomin Jeong ◽  
...  
Keyword(s):  
Mass Spectrometry ◽  
Reactive Oxygen Species ◽  
Aqueous Solution ◽  
Fluorescence Quenching ◽  
Limit Of Detection ◽  
Fluorescent Sensor ◽  
Ionization Mass ◽  
Oxygen Species ◽  
Marked Selectivity ◽  
Uv Visible

A novel thiosemicarbazide-based fluorescent sensor (AFC) was developed. It was successfully applied to detect hypochlorite (ClO−) with fluorescence quenching in bis-tris buffer. The limit of detection of AFC for ClO− was analyzed to be 58.7 μM. Importantly, AFC could be employed as an efficient and practical fluorescent sensor for ClO− in water sample and zebrafish. Moreover, AFC showed a marked selectivity to ClO− over varied competitive analytes with reactive oxygen species. The detection process of AFC to ClO− was illustrated by UV–visible and fluorescent spectroscopy and electrospray ionization–mass spectrometry (ESI–MS).

scholarly journals Efficient Lipid Bilayer Formation by Dipping Lipid-Loaded Microperforated Sheet in Aqueous Solution

Micromachines ◽  
2021 ◽  
Vol 12 (1) ◽  
pp. 53
Author(s):  
Nobuo Misawa ◽  
Satoshi Fujii ◽  
Koki Kamiya ◽  
Toshihisa Osaki ◽  
Shoji Takeuchi
Keyword(s):  
Aqueous Solution ◽  
Membrane Protein ◽  
Organic Solvent ◽  
Lipid Membrane ◽  
Coating Layer ◽  
Bilayer Lipid Membrane ◽  
Contact Method ◽  
Electrical Measurements ◽  
Droplet Interface Bilayer ◽  
Perforated Sheet

This paper describes a method for a bilayer lipid membrane (BLM) formation using a perforated sheet along with an open chamber. Microscopic observation of the formed membrane showed a typical droplet interface bilayer. We proved that the formed membrane was a BLM based on electrical measurements of the membrane protein α-hemolysin, which produces nanopores in BLMs. Unlike the conventional approach for BLM formation based on the droplet contact method, this method provides aqueous surfaces with no organic solvent coating layer. Hence, this method is suitable for producing BLMs that facilitate the direct addition of chemicals into the aqueous phase.

A green synthetic route for the surface-passivation of carbon dots as an effective multifunctional fluorescent sensor for the recognition and detection of toxic metal ions from aqueous solution

2019 ◽  
Vol 11 (4) ◽  
pp. 490-506 ◽  
Author(s):  
K. Radhakrishnan ◽  
P. Panneerselvam ◽  
M. Marieeswaran
Keyword(s):  
Aqueous Solution ◽  
Quantum Dots ◽  
Carbon Dots ◽  
Surface Passivation ◽  
Fluorescent Sensor ◽  
Toxic Metal ◽  
Carbon Quantum Dots ◽  
Synthetic Route ◽  
One Pot ◽  
Hydrothermal Methods

In this work, a green synthetic route was used to create a number of surface passivated fluorescent carbon quantum dots, which are explored as promising sensing probes, via facile one-pot hydrothermal methods.

Electrochemical studies of the Pb2+/Pb(Hg) system in aqueous and aqueous ethylene glycol solutions

1979 ◽  
Vol 57 (14) ◽  
pp. 1801-1803 ◽  
Author(s):  
Tibor Rabockai
Keyword(s):  
Aqueous Solution ◽  
Ethylene Glycol ◽  
Organic Solvent ◽  
Electrochemical Behavior ◽  
Experimental Error ◽  
Electrochemical Studies ◽  
Temperature Range ◽  
All Solutions ◽  
Aqueous Ethylene Glycol ◽  
Current Reversal

The electrochemical behavior of the Pb2+/Pb(Hg) system in aqueous and aqueous ethylene glycol solutions is studied in the temperature range of 20.0 to 50.0 °C by means of current reversal chronopotentiometry. It is shown that the reduction of Pb2+ ion is reversible and that kinetic or catalytic complications are not present. The value of dE1/2/dT is −0.6 mV/deg in the aqueous solution and −0.5 mV/deg in the solution with 56% (w/w) or higher concentrations of the organic solvent. In the above concentration range of ethylene glycol the activation energies of diffusion and viscosity vary from 4.3 × 103 to 7.2 × 103 cal mol−1 and from 3.7 × 103 to 6.7 × 103 cal mol−1, respectively. For all solutions the solvodynamic mean radius of the diffusing species remains constant within the experimental error, suggesting that the diffusing species is always the hydrated Pb2+ ion.

A triazole linked C-glycosyl pyrene fluorescent sensor for selective detection of Au3+ in aqueous solution and its application in bioimaging

2019 ◽  
Vol 279 ◽  
pp. 476-482 ◽  
Author(s):  
Bholanath Dolai ◽  
Sk Nayim ◽  
Maidul Hossain ◽  
Pallab Pahari ◽  
Ananta Kumar Atta
Keyword(s):  
Aqueous Solution ◽  
Fluorescent Sensor ◽  
Selective Detection

Colorimetric Determination of Oxyphenisatin and Oxyphenisatin Diacetate in Pharmaceutical Preparations

1964 ◽  
Vol 47 (4) ◽  
pp. 688-692
Author(s):  
Antoine Major
Keyword(s):  
Aqueous Solution ◽  
Organic Solvent ◽  
Silver Nitrate ◽  
Sodium Hydroxide ◽  
Column Chromatography ◽  
Sodium Hydroxide Solution ◽  
Pharmaceutical Preparations ◽  
Colorimetric Determination ◽  
Hydroxide Solution

Abstract A method is described which will quantitatively determine 0.1 mg oxyphenisatin or the diacetate in various pharmaceutical preparations. After removal of interferences by organic solvent extractions from aqueous solution and partition column chromatography, the reaction of oxyphenisatin (diacetate) with silver nitrate in alcoholic sodium hydroxide solution produces a violet solution, which follows Beer’s law (1—15 μg per ml). The method was satisfactorily applied to the assay of commercial tablets, liquids, and powders with recoveries, as per cent found of declared, in the range 95—101%.

A reusable fluorescent sensor from electrosynthesized water-soluble oligo(1-pyrenesulfonic acid) for effective detection of Fe3+

2018 ◽  
Vol 42 (24) ◽  
pp. 19450-19457 ◽  
Author(s):  
Nannan Jian ◽  
Kaiwen Lin ◽  
Bin Guo ◽  
Ge Zhang ◽  
Ximei Liu ◽  
...  
Keyword(s):  
Aqueous Solution ◽  
Detection Limit ◽  
High Selectivity ◽  
Fluorescent Sensor ◽  
Water Soluble ◽  
Low Detection Limit

Electrosynthesized oligo(1-pyrenesulfonic acid) displays high selectivity, low detection limit and outstanding reversibility in the detection of Fe3+ in aqueous solution.

A new highly selective fluorescent sensor for detection of Cd2+ and Hg2+ based on two different approaches in aqueous solution

2014 ◽  
Vol 190 ◽  
pp. 844-850 ◽  
Author(s):  
Xiu-Juan Jiang ◽  
Yan Fu ◽  
Hao Tang ◽  
Shuang-Quan Zang ◽  
Hong-Wei Hou ◽  
...  
Keyword(s):  
Aqueous Solution ◽  
Fluorescent Sensor

A 1,8-naphthalimide-based fluorescent sensor with high selectivity and sensitivity for Hg2+ in aqueous solution and living cells

2019 ◽  
Vol 11 (25) ◽  
pp. 3150-3154 ◽  
Author(s):  
Daying Liu ◽  
Hualing Zhu ◽  
Jun Shi ◽  
Xinxin Deng ◽  
Tingting Zhang ◽  
...  
Keyword(s):  
Aqueous Solution ◽  
High Selectivity ◽  
Fluorescent Sensor ◽  
Picolinic Acid ◽  
Iminodiacetic Acid ◽  
Living Cells

A new 4-amino-1,8-naphthalimide-based fluorescent sensor, with iminodiacetic acid and picolinic acid as receptors, was developed and applied successfully to detect Hg2+ in aqueous solution and living cells.

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