A Novel 4-(1H-Benzimidazol-2-yl)-2-methoxy-phenol Derived Fluorescent Sensor for Determination of CN– Ion

Rahmawati, R.; Purwono, Bambang; Matsjeh, Sabirin

doi:10.14233/ajchem.2017.20662

Cited by 6 publications

(6 citation statements)

References 24 publications

(29 reference statements)

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“…Figure 6, the interaction of the S8-Fˉ complex in fluorescent titration reaches its maximum intensity when fractionation is 0,25. The fractionimol 0.25 indicates that the host-guest interaction occurs when the S8/Fˉ stoichiometric ratio has a ratio of 1:2 [8][9][10][11][12][13].…”

Section: Resultsmentioning

confidence: 99%

Quantitative Analysis Of FË‰ Ion Recognition By A New Chemosensor from Flavon Group

et al. 2020

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A new chemosensor S8 compound from the flavon group that has been successfully synthesized. Test its ability as a chemosensor for F- anion, providing positive results that it can recognize F- anion with response to an increase in fluorescent solution. Titration of S8 solution in DMSO solvents was carried out with F- anion at various concentrations and then measurements were made on fluorometry instruments. The fluorescent titration emission spectrum shows that the S8-Fˉ host-guest interaction quantitatively in the form of LOD and kass. LOD and Kass values are 6.43 × 10ˉ4 M and 2 × 106 Mˉ1, respectively.

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Section: Resultsmentioning

confidence: 99%

Quantitative Analysis Of FË‰ Ion Recognition By A New Chemosensor from Flavon Group

et al. 2020

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“…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

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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.

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“…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

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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.

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A Novel 4-(1H-Benzimidazol-2-yl)-2-methoxy-phenol Derived Fluorescent Sensor for Determination of CN– Ion

Cited by 6 publications

References 24 publications

Quantitative Analysis Of FË‰ Ion Recognition By A New Chemosensor from Flavon Group

Quantitative Analysis Of FË‰ Ion Recognition By A New Chemosensor from Flavon Group

Effect of oxygen heteroatom on sensor-cyanide anions binding

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

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