Selective detection of Cu2+ and S2− by a colorimetric chemosensor: Experimental and theoretical calculations

So Young Kim; Seong Youl Lee; Jae Min Jung; Min Seon Kim; Cheal Kim

doi:10.1016/j.ica.2017.12.016

Selective detection of Cu²⁺ and S²⁻ by a colorimetric chemosensor: Experimental and theoretical calculations

So Young Kim, Seong Youl Lee, Jae Min Jung, Min Seon Kim, Cheal Kim

Dept. of Fine Chemistry

Seoul National University of Science and Technology (SNUST)

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

15 Scopus citations

Abstract

A multifunctional colorimetric chemosensor 1, based on 4-(diethylamino)-2-hydroxybenzaldehyde and 2,3-diamino-5-bromopyridine, has been synthesized and characterized. Sensor 1 detected instantly both Cu²⁺ and S²⁻ by the color change from pale yellow to deep yellow. The binding modes of 1 with Cu²⁺ and S²⁻ were found to be the 1:1 stoichiometry through Job plot and ESI-mass spectrometry analysis, respectively. In addition, the detection limit of 1 for Cu²⁺ was found to be 68.6 nΜ which was much lower than WHO guideline (31.5 µΜ) in drinking water. Importantly, sensor 1 could be used to quantify Cu²⁺ in water samples. Moreover, 1 exhibited a high selectivity for S²⁻ in the presence of other anions. The sensing mechanisms of Cu²⁺ and S²⁻ by 1 were explained by theoretical calculations.

Original language	English
Pages (from-to)	709-717
Number of pages	9
Journal	Inorganica Chimica Acta
Volume	471
DOIs	https://doi.org/10.1016/j.ica.2017.12.016
State	Published - 24 Feb 2018

Keywords

Colorimetric chemosensor
Copper ion
Naked-eye
Sulfide
Theoretical calculations

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title = "Selective detection of Cu2+ and S2− by a colorimetric chemosensor: Experimental and theoretical calculations",

abstract = "A multifunctional colorimetric chemosensor 1, based on 4-(diethylamino)-2-hydroxybenzaldehyde and 2,3-diamino-5-bromopyridine, has been synthesized and characterized. Sensor 1 detected instantly both Cu2+ and S2− by the color change from pale yellow to deep yellow. The binding modes of 1 with Cu2+ and S2− were found to be the 1:1 stoichiometry through Job plot and ESI-mass spectrometry analysis, respectively. In addition, the detection limit of 1 for Cu2+ was found to be 68.6 nΜ which was much lower than WHO guideline (31.5 µΜ) in drinking water. Importantly, sensor 1 could be used to quantify Cu2+ in water samples. Moreover, 1 exhibited a high selectivity for S2− in the presence of other anions. The sensing mechanisms of Cu2+ and S2− by 1 were explained by theoretical calculations.",

keywords = "Colorimetric chemosensor, Copper ion, Naked-eye, Sulfide, Theoretical calculations",

author = "Kim, \{So Young\} and Lee, \{Seong Youl\} and Jung, \{Jae Min\} and Kim, \{Min Seon\} and Cheal Kim",

note = "Publisher Copyright: {\textcopyright} 2017 Elsevier B.V.",

year = "2018",

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day = "24",

doi = "10.1016/j.ica.2017.12.016",

language = "English",

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journal = "Inorganica Chimica Acta",

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T1 - Selective detection of Cu2+ and S2− by a colorimetric chemosensor

T2 - Experimental and theoretical calculations

AU - Kim, So Young

AU - Lee, Seong Youl

AU - Jung, Jae Min

AU - Kim, Min Seon

AU - Kim, Cheal

PY - 2018/2/24

Y1 - 2018/2/24

N2 - A multifunctional colorimetric chemosensor 1, based on 4-(diethylamino)-2-hydroxybenzaldehyde and 2,3-diamino-5-bromopyridine, has been synthesized and characterized. Sensor 1 detected instantly both Cu2+ and S2− by the color change from pale yellow to deep yellow. The binding modes of 1 with Cu2+ and S2− were found to be the 1:1 stoichiometry through Job plot and ESI-mass spectrometry analysis, respectively. In addition, the detection limit of 1 for Cu2+ was found to be 68.6 nΜ which was much lower than WHO guideline (31.5 µΜ) in drinking water. Importantly, sensor 1 could be used to quantify Cu2+ in water samples. Moreover, 1 exhibited a high selectivity for S2− in the presence of other anions. The sensing mechanisms of Cu2+ and S2− by 1 were explained by theoretical calculations.

AB - A multifunctional colorimetric chemosensor 1, based on 4-(diethylamino)-2-hydroxybenzaldehyde and 2,3-diamino-5-bromopyridine, has been synthesized and characterized. Sensor 1 detected instantly both Cu2+ and S2− by the color change from pale yellow to deep yellow. The binding modes of 1 with Cu2+ and S2− were found to be the 1:1 stoichiometry through Job plot and ESI-mass spectrometry analysis, respectively. In addition, the detection limit of 1 for Cu2+ was found to be 68.6 nΜ which was much lower than WHO guideline (31.5 µΜ) in drinking water. Importantly, sensor 1 could be used to quantify Cu2+ in water samples. Moreover, 1 exhibited a high selectivity for S2− in the presence of other anions. The sensing mechanisms of Cu2+ and S2− by 1 were explained by theoretical calculations.

KW - Colorimetric chemosensor

KW - Copper ion

KW - Naked-eye

KW - Sulfide

KW - Theoretical calculations

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DO - 10.1016/j.ica.2017.12.016

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SN - 0020-1693

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SP - 709

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JO - Inorganica Chimica Acta

JF - Inorganica Chimica Acta

ER -

Selective detection of Cu²⁺ and S²⁻ by a colorimetric chemosensor: Experimental and theoretical calculations

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Keywords

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