A 4-(1H-Benzo[d]oxazole-2-yl)-2-methoxyphenol as Dual Selective Sensor for Cyanide Ion Detection

Rahmawati, Risma Nur; Purwono, Bambang; Hadisaputera, S.

doi:10.14233/ajchem.2019.21679

Cited by 3 publications

(2 citation statements)

References 14 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…In the previous study, we designed a chemosensor compound derived from benzimidazole (S1) [5] and benzoxazole (S3) [6], which are active as a receptor to detect a cyanide anion. The S 1 is a simpler sensor with an imidazole ring containing nitrogen heteroatom, which could detect cyanide anions with the value of k bind is 2.5 (±0.26) x 10 6 M -1…”

Section: Introductionmentioning

confidence: 99%

Effect of oxygen heteroatom on sensor-cyanide anions binding

Rahmawati

Sofia

2022

Acta.Chim.Asiana

View full text Add to dashboard Cite

The study aims to analyze the effect of heteroatom replacement on benzimidazole derivative chemosensor compounds on the ability to form hydrogen bonds with anions. In this case, the N heteroatom in the benzimidazole derivative sensor compound (S1) is replaced with the O heteroatom to become a benzoxazole derivative sensor compound (S3). Calculating the energy of the molecules involved in the electron level gives the following results: replacing heteroatoms with more electronegative atoms increases the HOMO energy of the sensor molecules, making the sensor more reactive to anions and strengthening the binding of the sensor with cyanide anions.

show abstract

Section: Introductionmentioning

confidence: 99%

Effect of oxygen heteroatom on sensor-cyanide anions binding

Rahmawati

Sofia

2022

Acta.Chim.Asiana

View full text Add to dashboard Cite

show abstract

“…Previoulsy, we synthesized a chemosensor compound derived from benzimidazole (S1) [2] and benzoxazole (S3) derivatives from vanillin [3]. We attached a nitro group into the ring of S1 and S2 compounds at position 5 to obtain chemosensor compounds S2 and S4 (figure 1), which gives a more potent (in the form of color change and fluorescent) signal [4,5].…”

Section: Introductionmentioning

confidence: 99%

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

Rahmawati¹,

Idrus²,

Supriadi³

et al. 2021

Acta.Chim.Asiana

View full text Add to dashboard Cite

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.

show abstract