scholarly journals A novel dihydro phenylquinazolinone-based two-in-one colourimetric chemosensor for nickel(ii), copper(ii) and its copper complex for the fluorescent colourimetric nanomolar detection of the cyanide anion

RSC Advances ◽  
2020 ◽  
Vol 10 (73) ◽  
pp. 44860-44875
Author(s):  
Meman Sahu ◽  
Amit Kumar Manna ◽  
Shubhamoy Chowdhury ◽  
Goutam Kumar Patra
Keyword(s):  
Copper Complex ◽  
Colorimetric Sensor ◽  
Practical Application ◽  
Cyanide Anion ◽  
Colorimetric Chemosensor ◽  
Nanomolar Detection

A novel colorimetric chemosensor L has been developed for the detection of Ni2+ and Cu2+ ions. The obtained L–Cu2+ complex can be used as a new cascade fluorescent-colorimetric sensor for the nanomolar detection of CN− ions. This chemosensor has practical application.

A simple thiourea based colorimetric sensor for cyanide anion

Tetrahedron ◽  
2010 ◽  
Vol 66 (38) ◽  
pp. 7465-7471 ◽  
Author(s):  
Maurice O. Odago ◽  
Diane M. Colabello ◽  
Alistair J. Lees
Keyword(s):  
Colorimetric Sensor ◽  
Cyanide Anion

A polydiacetylene-based colorimetric chemosensor for malondialdehyde detection: a food spoilage indicator

2017 ◽  
Vol 5 (33) ◽  
pp. 8553-8558 ◽  
Author(s):  
Sangwan Kim ◽  
Sunjong Lee ◽  
Yejin Ahn ◽  
Hyun Ki Kim ◽  
Joonseok Koh ◽  
...  
Keyword(s):  
Colorimetric Sensor ◽  
Food Spoilage ◽  
Colorimetric Chemosensor

A polydiacetylene-based colorimetric sensor was devised to detect malondialdehyde as a food spoilage indicator.

Dual colorimetric sensor for picric acid and pyrophosphate: Practical application for molecular logic gates

2019 ◽  
Vol 166 ◽  
pp. 443-450 ◽  
Author(s):  
Pawan Kumar ◽  
Dheeraj Arya ◽  
Deepak Nain ◽  
Ajeet Singh ◽  
Amrita Ghosh ◽  
...  
Keyword(s):  
Picric Acid ◽  
Logic Gates ◽  
Colorimetric Sensor ◽  
Practical Application ◽  
Molecular Logic ◽  
Molecular Logic Gates

A colorimetric chemosensor for sulfide in a near-perfect aqueous solution: practical application using a test kit

RSC Advances ◽  
2016 ◽  
Vol 6 (88) ◽  
pp. 85091-85099 ◽  
Author(s):  
Seong Youl Lee ◽  
Cheal Kim
Keyword(s):  
Aqueous Solution ◽  
Colorimetric Detection ◽  
Practical Application ◽  
Practical Applications ◽  
Colorimetric Chemosensor ◽  
Test Kit

A selective chemosensor with practical applications was developed for the colorimetric detection of S2− in a near-perfect aqueous solution.

scholarly journals Senyawa Hidrazone dari Vanilin-DNPH Sebagai Sensor Kolorimetri Anion Sianida

2020 ◽  
Vol 16 (1) ◽  
pp. 77
Author(s):  
S Suharman ◽  
Siti Utari Rahayu
Keyword(s):  
Detection Limit ◽  
Limit Of Detection ◽  
Colorimetric Sensor ◽  
Anion Sensor ◽  
Cyanide Anion ◽  
Hydrazone Compound

<p>Senyawa hidrazon (<em>E</em>)-4-((2-(2,4-<em>dinitrophenyl</em>)<em>hydrazineylidene</em>)<em>methyl</em>)-2-<em>methoxyphenol</em> telah disintesis dari vanilin dan 2,4-dinitrofenilhidrazin (DNPH). Uji sensor anion dilakukan dengan menambahkan anion F<sup>-</sup>, Cl<sup>-</sup>, Br<sup>-</sup>, I<sup>-</sup>, CN<sup>-</sup>, SO<sub>4</sub><sup>2-</sup>, CO<sub>3</sub><sup>2-</sup>, CH<sub>3</sub>COO<sup>-</sup> dan H<sub>2</sub>PO<sub>4</sub><sup>-</sup> dalam pelarut asetonitril. Uji limit deteksi reseptor  (<em>E</em>)-4-((2-(2,4-<em>dinitrophenyl</em>)<em>hydrazineylidene</em>)<em>methyl</em>)-2-<em>methoxyphenol</em> terhadap anion sianida dilakukan dalam pelarut asetonitril. Hasil uji sensor anion menunjukan bahwa reseptor  selektif terhadap anion sianida dengan menghasilkan perubahan warna dari kuning ke merah. Hasil analisa dengan spektrofotometer UV-Vis reseptor memberikan perubahan panjang gelombang dari 395 nm menjadi 472 nm pada penambahan anion sianida. Reseptor (<em>E</em>)-4-((2-(2,4-<em>dinitrophenyl</em>)<em>hydrazineylidene</em>)<em>methyl</em>)-2-<em>methoxyphenol</em> dapat mendeteksi anion CN- dengan limit deteksi sebesar 7 mM.</p><p> </p><p><strong>A Hydrazone Compound from Vanillin-DNPH as Colorimetric Sensor of Cyanide Anion</strong><strong>.</strong> A hydrazone compound (<em>E</em>)-4-((2-(2,4-dinitrophenyl)hydrazineylidene)methyl)-2-methoxyphenol has been synthesized from vanillin and 2,4-dinitrophenylhydrazine (DNPH). The anion sensor study were done by adding Br<sup>-</sup><sub>, </sub>CN<sup>-</sup>, F<sup>-</sup>, SO<sub>4</sub><sup>2-</sup><sub>, </sub>Cl<sup>-</sup>, I<sup>-</sup> , CO<sub>3</sub><sup>2-</sup>, CH<sub>3</sub>COO<sup>-</sup> and H<sub>2</sub>PO<sub>4</sub><sup>-</sup> anion in acetonitrile solvent. The detection limit study of receptor <em>E</em>)-4-((2-(2,4-dinitrophenyl)hydrazineylidene)methyl)-2-methoxyphenol for cyanide anion was carried out in acetonitrile.  The result of anion sensor study shows that the receptor was selective to cyanide anion by providing change of color from yellow to red. The analysis result using spectrophotometer ultraviolet-visible of the receptor provided change of maximum wavelength from 395 nm to 472 nm when the cyanide anion was added. Receptor (<em>E</em>)-4-((2-(2,4-dinitrophenyl) hydrazineylidene)methyl)-2-methoxyphenol can detect CN<sup>-</sup> with limit of detection 7 mM.</p><div><span><br /></span></div>

A simple yet highly selective colorimetric sensor for cyanide anion in an aqueous environment

2008 ◽  
Vol 6 (17) ◽  
pp. 3038 ◽  
Author(s):  
Hao-Tao Niu ◽  
Dongdong Su ◽  
Xueliang Jiang ◽  
Wenzhi Yang ◽  
Zhenming Yin ◽  
...  
Keyword(s):  
Colorimetric Sensor ◽  
Aqueous Environment ◽  
Cyanide Anion

Synthesis of 5-nitrovanillin in low temperature as cyanide anion sensor

2021 ◽  
Vol 4 (1) ◽  
pp. 104
Author(s):  
R Rahmawati ◽  
Syarifa Wahidah Al Idrus ◽  
Supriadi Supriadi ◽  
Lalu Sulman
Keyword(s):  
Molecular Structure ◽  
Nitric Acid ◽  
Low Temperature ◽  
Low Temperatures ◽  
Color Change ◽  
Anion Recognition ◽  
Electron Delocalization ◽  
Anion Sensor ◽  
Cyanide Anion ◽  
Colorimetric Chemosensor

In the synthesis of the organic sensor, the molecular structure will affect the ability of a compound to be used as a colorimetric chemosensor. Here, we present a simple synthesis technique for 5-nitrovanillin. It has been successfully synthesized using nitric acid as a source of nitro groups. Dichloromethane DCM was used as a solvent, and the synthesis was carried out at low temperatures (under 5°C). The method produces a good yield. The nitro group attached to the structure of the chemosensor plays a role in prolonging the electron delocalization. Its effect is in the process of anion recognition by the chemosensor. The formation of a sensor-analyte complex between the chemosensor and anion produces a color change in the solution.

Synthesis of 1,4-Dihydropyridine as a Fluorescent and Colorimetric Chemosensor for Detection of Fe3+ Ion

2019 ◽  
Vol 17 (10) ◽  
pp. 747-754
Author(s):  
Zohreh Kheil Kordi ◽  
Ghodsi Mohammadi Ziarani ◽  
Alireza Badiei ◽  
Negar Lashgari
Keyword(s):  
Ammonium Acetate ◽  
Detection Limits ◽  
Colorimetric Sensor ◽  
Colorimetric Chemosensor ◽  
Vis Spectroscopy

A new fluorescent and colorimetric sensor for Fe3+ ion were synthesized via four-component reaction of acetophenone, dimedone, benzaldehyde and ammonium acetate in the presence of SrFe12O19. The chemosensor shows excellent sensitivity toward Fe3+ ion. The sensing ability of the chemosensor was studied by fluorescent and UV-Vis spectroscopy. The detection limits for Fe3+ were calculated respectively about 8.3 × 10–6 M and 2.3 × 10–6 M for fluorescence and UV-Vis techniques.

Silver nanoparticles as highly efficient and selective optical probe for sulphide via dendrimer formation in aqueous medium

RSC Advances ◽  
2016 ◽  
Vol 6 (18) ◽  
pp. 14563-14569 ◽  
Author(s):  
Isha Sanskriti ◽  
K. K. Upadhyay
Keyword(s):  
Silver Nanoparticles ◽  
Detection Limit ◽  
Aqueous Medium ◽  
Optical Probe ◽  
Colorimetric Sensor ◽  
Highly Efficient ◽  
Nanomolar Detection

1-[(4-Nitrophenyl)azo]-2-naphthol capped AgNPs were evaluated as a colorimetric sensor for S2− in aqueous medium over pH 4 to 10 with a nanomolar detection limit. The TEM, SEM and AFM images revealed the transition of spherical AgNPs into dendrimers.

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