Triazole-Coupled Benzimidazole-Based Fluorescent Sensor for Silver, Bromide, and Chloride Ions in Aqueous Media

Yoon Gun Ko; Won Sik Na; Mayank; Narinder Singh; Doo Ok Jang

doi:10.1007/s10895-019-02407-y

Triazole-Coupled Benzimidazole-Based Fluorescent Sensor for Silver, Bromide, and Chloride Ions in Aqueous Media

Yoon Gun Ko, Won Sik Na, Mayank, Narinder Singh, Doo Ok Jang

Chemistry and Medical Chemistry

Research output: Contribution to journal › Article › peer-review

19 Citations (Scopus)

Abstract

A triazole-coupled benzimidazole-based fluorescent probe S1 with nitrogen and oxygen binding sites was synthesized and its properties as a probe for cations were investigated. Probe S1 was found to be highly selective toward Ag⁺ ions in aqueous media. The fluorescence intensity of S1 was quenched as a function of the concentration of Ag⁺ ions in the presence of potential interfering cations with a detection limit of 2.70 μM. The resulting S1-Ag⁺ complex was subsequently studied for its anion recognition abilities and found to recognize Br⁻ and Cl⁻ ions, revealing the concentration-dependent fluorescence enhancement with detection limits of 22.2 and 23.0 μM, respectively. Revival of the fluorescence profile of probe S1 indicated that Ag⁺ ion was released from the S1-Ag⁺ complex. Probe S1 is a sensor that can be single-handedly utilized for the qualitative and quantitative determination of Ag⁺, Br⁻, and Cl⁻ ions in aqueous media.

Original language	English
Pages (from-to)	945-952
Number of pages	8
Journal	Journal of Fluorescence
Volume	29
Issue number	4
DOIs	https://doi.org/10.1007/s10895-019-02407-y
Publication status	Published - 2019 Jul 1

Bibliographical note

Funding Information:
This research was supported partially by the Basic Science Research Program through the National Research Foundation of Korea (NRF) funded by the Ministry of Education (NRF-2018R1D1A1B07041198).

Publisher Copyright:
© 2019, Springer Science+Business Media, LLC, part of Springer Nature.

All Science Journal Classification (ASJC) codes

Biochemistry
Spectroscopy
Clinical Biochemistry

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title = "Triazole-Coupled Benzimidazole-Based Fluorescent Sensor for Silver, Bromide, and Chloride Ions in Aqueous Media",

abstract = "A triazole-coupled benzimidazole-based fluorescent probe S1 with nitrogen and oxygen binding sites was synthesized and its properties as a probe for cations were investigated. Probe S1 was found to be highly selective toward Ag+ ions in aqueous media. The fluorescence intensity of S1 was quenched as a function of the concentration of Ag+ ions in the presence of potential interfering cations with a detection limit of 2.70 μM. The resulting S1-Ag+ complex was subsequently studied for its anion recognition abilities and found to recognize Br− and Cl− ions, revealing the concentration-dependent fluorescence enhancement with detection limits of 22.2 and 23.0 μM, respectively. Revival of the fluorescence profile of probe S1 indicated that Ag+ ion was released from the S1-Ag+ complex. Probe S1 is a sensor that can be single-handedly utilized for the qualitative and quantitative determination of Ag+, Br−, and Cl− ions in aqueous media.",

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AU - Singh, Narinder

AU - Jang, Doo Ok

N1 - Funding Information: This research was supported partially by the Basic Science Research Program through the National Research Foundation of Korea (NRF) funded by the Ministry of Education (NRF-2018R1D1A1B07041198). Publisher Copyright: © 2019, Springer Science+Business Media, LLC, part of Springer Nature.

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N2 - A triazole-coupled benzimidazole-based fluorescent probe S1 with nitrogen and oxygen binding sites was synthesized and its properties as a probe for cations were investigated. Probe S1 was found to be highly selective toward Ag+ ions in aqueous media. The fluorescence intensity of S1 was quenched as a function of the concentration of Ag+ ions in the presence of potential interfering cations with a detection limit of 2.70 μM. The resulting S1-Ag+ complex was subsequently studied for its anion recognition abilities and found to recognize Br− and Cl− ions, revealing the concentration-dependent fluorescence enhancement with detection limits of 22.2 and 23.0 μM, respectively. Revival of the fluorescence profile of probe S1 indicated that Ag+ ion was released from the S1-Ag+ complex. Probe S1 is a sensor that can be single-handedly utilized for the qualitative and quantitative determination of Ag+, Br−, and Cl− ions in aqueous media.

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Triazole-Coupled Benzimidazole-Based Fluorescent Sensor for Silver, Bromide, and Chloride Ions in Aqueous Media

Abstract

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