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

17 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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@article{ac9826f76ee24418ae199411bcfb622f,

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",

month = feb,

day = "24",

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

language = "English",

volume = "471",

pages = "709--717",

journal = "Inorganica Chimica Acta",

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TY - JOUR

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

UR - https://www.scopus.com/pages/publications/85037983610

U2 - 10.1016/j.ica.2017.12.016

DO - 10.1016/j.ica.2017.12.016

M3 - Article

AN - SCOPUS:85037983610

SN - 0020-1693

VL - 471

SP - 709

EP - 717

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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