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Vol. 30 No. 9 (2018): Vol 30 Issue 9

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A Naked-Eye Colorimetric Receptor for Anions Based on Nitro Group Featuring with Benzimidazole Unit

https://doi.org/10.14233/ajchem.2018.21294
R. Rahmawati
Study Program of Chemistry, Department of Education of Mathematics and Natural Sciences, University of Mataram, Jalan Majapahit 62, Mataram, Indonesia; Department of Chemistry, University of Gadjah Mada, Jalan Kaliurang Sekip Utara Bulaksumur 21, Yogyakarta, Indonesia
B. Purwono
Department of Chemistry, University of Gadjah Mada, Jalan Kaliurang Sekip Utara Bulaksumur 21, Yogyakarta, Indonesia
S. Matsjeh
Department of Chemistry, University of Gadjah Mada, Jalan Kaliurang Sekip Utara Bulaksumur 21, Yogyakarta, Indonesia

Corresponding Author(s) : R. Rahmawati

Asian Journal of Chemistry, Vol. 30 No. 9 (2018): Vol 30 Issue 9

Abstract

A novel receptor based on nitro group featuring with benzimidazole unit (S2) was successfully synthesized and applied to the anion (CN–, F– and H2PO4–) recognition. The S2 changed its colour for light yellow to dark yellow on addition of the anions in DMSO solvent. The LOD and Kass values determined by UV-visible titration was 2.8 × 10–6 M and 1.2 (± 0.25) × 106 M–1 for CN– ion; 1.14 × 10–6 M and 2.5 (± 0.25) × 106 M–1 for F– ion; and 1.23 × 10–5 M and 6.25 (± 0.177) × 106 M–1 for H2PO4– ion, respectively.

Keywords

Colorimetric Nitro group Benzimidazole
Rahmawati, R., Purwono, B., & Matsjeh, S. (2018). A Naked-Eye Colorimetric Receptor for Anions Based on Nitro Group Featuring with Benzimidazole Unit. Asian Journal of Chemistry, 30(9), 1933–1936. https://doi.org/10.14233/ajchem.2018.21294
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