A Naked-Eye Fluoride Ion Recognition Based Vanilin Derivative Chemosensors

R Rahmawati; Bambang Purwono; Sabirin Matsjeh

doi:10.29303/aca.v2i2.16

A Naked-Eye Fluoride Ion Recognition Based Vanilin Derivative Chemosensors

Authors

R Rahmawati , Bambang Purwono , Sabirin Matsjeh

DOI:

10.29303/aca.v2i2.16

Published:

2019-08-12

Issue:

Vol. 2 No. 2 (2019)

Keywords:

flouride ion, chemosensor, vanilin

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Rahmawati, R., Purwono, B., & Matsjeh, S. (2019). A Naked-Eye Fluoride Ion Recognition Based Vanilin Derivative Chemosensors. Acta Chimica Asiana, 2(2), 110–113. https://doi.org/10.29303/aca.v2i2.16

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Abstract

Two new receptors S2 and S6 were designed and synthesized based on benzimidazole and azo-benzimidazole synthesized from vanillin for the colorimetric detection of fluoride ion. The presence of nitro group in S2 and azo in S6 makes â€“OH proton (binding site) acidic and therefore it could deprotonate with addition of basic anion such as fluoride. Hydroxyl (â€“OH) functionality which detects basic fluoride ions via hydrogen-bonding mechanism wich is mechanism involved in the color change of receptor R2 and R6, its mean that initial hydrogen bond formation of F^âˆ’ ion with â€“OH group.

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A Naked-Eye Fluoride Ion Recognition Based Vanilin Derivative Chemosensors

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