scholarly journals A new of colorimetric sensor based on azo-hydrazone compound for recognition of CN− ion

2021 ◽  
Author(s):  
S. Suharman ◽  
Rini Hardiyanti ◽  
Susilawati ◽  
Siti Utari Rahayu
Keyword(s):  
Colorimetric Sensor ◽  
Hydrazone Compound

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>

Dual-Mode Colorimetric Sensor Based on Ultrathin Resonating Facilitator Capable of Nanometer-Thick Virus Detection for Environment Monitoring

2020 ◽  
Vol 3 (7) ◽  
pp. 6636-6644
Author(s):  
Young Jin Yoo ◽  
Joo Hwan Ko ◽  
Won-Guen Kim ◽  
Yeong Jae Kim ◽  
Duk-Jo Kong ◽  
...  
Keyword(s):  
Virus Detection ◽  
Colorimetric Sensor ◽  
Environment Monitoring ◽  
Dual Mode

Triggered peroxidase-like activity of Au decorated carbon dots for colorimetric monitoring of Hg2+ enrichment in Chlorella vulgaris

The Analyst ◽  
2020 ◽  
Vol 145 (16) ◽  
pp. 5500-5507
Author(s):  
Wene Liu ◽  
Lili Tian ◽  
Jie Du ◽  
Jiangmin Wu ◽  
Yongmei Liu ◽  
...  
Keyword(s):  
Chlorella Vulgaris ◽  
Carbon Dots ◽  
Colorimetric Sensor

Schematic illustration of a Hg2+ colorimetric sensor based on the Hg2+ triggered peroxidase-like activity of GNP@CDs.

A novel glucose colorimetric sensor based on intrinsic peroxidase-like activity of C60-carboxyfullerenes

2013 ◽  
Vol 47 ◽  
pp. 502-507 ◽  
Author(s):  
Ruimin Li ◽  
Mingming Zhen ◽  
Mirong Guan ◽  
Daiqin Chen ◽  
Guoqiang Zhang ◽  
...  
Keyword(s):  
Colorimetric Sensor

Polyoxometalate based ionic crystal: dual applications in selective colorimetric sensor for hydrated ZnCl2 and antimicrobial activity

2021 ◽  
Vol 45 (12) ◽  
pp. 5576-5588
Author(s):  
C. Sabarinathan ◽  
M. Karthikeyan ◽  
R. M. Murugappan ◽  
Savarimuthu Philip Anthony ◽  
Bhaskaran Shankar ◽  
...  
Keyword(s):  
Antimicrobial Activity ◽  
Ionic Crystal ◽  
Colorimetric Sensor ◽  
Icp Oes ◽  
One Pot ◽  
One Pot Synthesis ◽  
Acidic Conditions

One-pot synthesis of POM-salt ([Himi]4[SiMo12O40] (1)) was achieved by mixing silicomolybdic acid and imidazole in acidic conditions and characterized by FTIR, TGA, SEM, EDX, ICP-OES and XPS.

scholarly journals Inkjet-printed O2 gas sensors in intelligent packaging

The Analyst ◽  
2021 ◽  
Author(s):  
M. D. Fernández-Ramos ◽  
M. Pageo-Cabrera ◽  
L. F. Capitán-Vallvey ◽  
I. M. Pérez de Vargas-Sansalvador
Keyword(s):  
Gas Sensors ◽  
Colorimetric Sensor ◽  
Modified Atmosphere ◽  
Intelligent Packaging ◽  
Smart Packaging ◽  
Degradation Reactions

An inkjet printed membrane is presented as a colorimetric sensor for oxygen for use in smart packaging, in order to quickly inform the consumer about possible degradation reactions in modified atmosphere products (MAP).

A full-wavelength coverage colorimetric sensor depending on polymer-carbon nanodots from blue to red for visual detection of nitrite via smartphone

2021 ◽  
Vol 191 ◽  
pp. 109383
Author(s):  
Rui Wang ◽  
Guotong Ruan ◽  
Yujie Sun ◽  
Duoduo Zhao ◽  
Haidong Yu ◽  
...  
Keyword(s):  
Visual Detection ◽  
Colorimetric Sensor ◽  
Carbon Nanodots

An anthracene–quinoline based dual-mode fluorometric–colorimetric sensor for the detection of Fe3+ and its application in live cell imaging

2021 ◽  
Author(s):  
Tahereh Tehrani ◽  
Soraia Meghdadi ◽  
Zohreh Salarvand ◽  
Behnam Tavakoli ◽  
Kiamars Eskandari ◽  
...  
Keyword(s):  
Live Cell Imaging ◽  
Cell Imaging ◽  
Colorimetric Detection ◽  
Colorimetric Sensor ◽  
Live Cell ◽  
Dual Mode ◽  
Highly Sensitive

A highly sensitive anthracene–quinoline based dual-mode sensor has been synthesized and used for the fluorometric and colorimetric detection of Fe3+ and in live cell imaging.

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