Dual-channel detection of Cu2+ and F- with a simple Schiff-based colorimetric and fluorescent sensor

Yu Jeong Na; Ye Won Choi; Jin Yeong Yun; Kyung Min Park; Pahn Shick Chang; Cheal Kim

doi:10.1016/j.saa.2014.10.060

Dual-channel detection of Cu²⁺ and F^- with a simple Schiff-based colorimetric and fluorescent sensor

Yu Jeong Na, Ye Won Choi, Jin Yeong Yun, Kyung Min Park, Pahn Shick Chang, Cheal Kim

Dept. of Fine Chemistry

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

99 Scopus citations

Abstract

A simple and easily synthesized colorimetric and fluorescent receptor 1, based on 4-diethylaminosalicylaldehyde moieties as a binding and signaling unit, has been synthesized and characterized. The receptor 1 has a selective colorimetric sensing ability for copper (II) ion by changing color from colorless to yellow in aqueous solution, and could be utilized to monitor Cu(II) over a wide pH range of 4-11. In addition, the detection limit (12 μM) of 1 for Cu²⁺ is much lower than that (30 μM) recommended by WHO in drinking water, and its copper complex could be reversible simply through treatment with a proper reagent such as EDTA. Moreover, receptor 1 exhibited both a color change from colorless to yellow and fluorescence enhancement with a red shift upon addition to F^- in DMSO. The recognition mechanism was attributed to the intermolecular proton transfer between the hydroxyl group of the receptor and the fluoride.

Original language	English
Pages (from-to)	1649-1657
Number of pages	9
Journal	Spectrochimica Acta - Part A: Molecular and Biomolecular Spectroscopy
Volume	136
Issue number	PC
DOIs	https://doi.org/10.1016/j.saa.2014.10.060
State	Published - 5 Feb 2015

Keywords

Colorimetric
Copper
Fluorescent
Fluoride
Reversible

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

Access to Document

10.1016/j.saa.2014.10.060

Cite this

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title = "Dual-channel detection of Cu2+ and F- with a simple Schiff-based colorimetric and fluorescent sensor",

abstract = "A simple and easily synthesized colorimetric and fluorescent receptor 1, based on 4-diethylaminosalicylaldehyde moieties as a binding and signaling unit, has been synthesized and characterized. The receptor 1 has a selective colorimetric sensing ability for copper (II) ion by changing color from colorless to yellow in aqueous solution, and could be utilized to monitor Cu(II) over a wide pH range of 4-11. In addition, the detection limit (12 μM) of 1 for Cu2+ is much lower than that (30 μM) recommended by WHO in drinking water, and its copper complex could be reversible simply through treatment with a proper reagent such as EDTA. Moreover, receptor 1 exhibited both a color change from colorless to yellow and fluorescence enhancement with a red shift upon addition to F- in DMSO. The recognition mechanism was attributed to the intermolecular proton transfer between the hydroxyl group of the receptor and the fluoride.",

keywords = "Colorimetric, Copper, Fluorescent, Fluoride, Reversible",

author = "Na, \{Yu Jeong\} and Choi, \{Ye Won\} and Yun, \{Jin Yeong\} and Park, \{Kyung Min\} and Chang, \{Pahn Shick\} and Cheal Kim",

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T1 - Dual-channel detection of Cu2+ and F- with a simple Schiff-based colorimetric and fluorescent sensor

AU - Na, Yu Jeong

AU - Choi, Ye Won

AU - Yun, Jin Yeong

AU - Park, Kyung Min

AU - Chang, Pahn Shick

AU - Kim, Cheal

PY - 2015/2/5

Y1 - 2015/2/5

N2 - A simple and easily synthesized colorimetric and fluorescent receptor 1, based on 4-diethylaminosalicylaldehyde moieties as a binding and signaling unit, has been synthesized and characterized. The receptor 1 has a selective colorimetric sensing ability for copper (II) ion by changing color from colorless to yellow in aqueous solution, and could be utilized to monitor Cu(II) over a wide pH range of 4-11. In addition, the detection limit (12 μM) of 1 for Cu2+ is much lower than that (30 μM) recommended by WHO in drinking water, and its copper complex could be reversible simply through treatment with a proper reagent such as EDTA. Moreover, receptor 1 exhibited both a color change from colorless to yellow and fluorescence enhancement with a red shift upon addition to F- in DMSO. The recognition mechanism was attributed to the intermolecular proton transfer between the hydroxyl group of the receptor and the fluoride.

AB - A simple and easily synthesized colorimetric and fluorescent receptor 1, based on 4-diethylaminosalicylaldehyde moieties as a binding and signaling unit, has been synthesized and characterized. The receptor 1 has a selective colorimetric sensing ability for copper (II) ion by changing color from colorless to yellow in aqueous solution, and could be utilized to monitor Cu(II) over a wide pH range of 4-11. In addition, the detection limit (12 μM) of 1 for Cu2+ is much lower than that (30 μM) recommended by WHO in drinking water, and its copper complex could be reversible simply through treatment with a proper reagent such as EDTA. Moreover, receptor 1 exhibited both a color change from colorless to yellow and fluorescence enhancement with a red shift upon addition to F- in DMSO. The recognition mechanism was attributed to the intermolecular proton transfer between the hydroxyl group of the receptor and the fluoride.

KW - Colorimetric

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