Fluorescence 'on-off-on' chemosensor for the sequential recognition of Hg2+ and cysteine in water

Ye Won Choi; Jae Jun Lee; Ga Rim You; Cheal Kim

doi:10.1039/c5ra06601h

Fluorescence 'on-off-on' chemosensor for the sequential recognition of Hg²⁺ and cysteine in water

Ye Won Choi, Jae Jun Lee, Ga Rim You, Cheal Kim

Dept. of Fine Chemistry

Seoul National University of Science and Technology (SNUST)

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

25 Scopus citations

Abstract

A simple fluorescent chemosensor 1 for the sequential detection of Hg²⁺ and cysteine was developed by combination of benzene-1,2-diamine and 6-bromopyridine-2-carboxaldehyde. The sensor 1 exhibited an 'on-off' fluorescent quenching response in the presence of Hg²⁺, and could be applied for detection of Hg²⁺ with a good recovery in water samples. The sensing mechanism of 1 for Hg²⁺ was supported by theoretical calculations. Moreover, the resulting Hg²⁺-2·1 complex acted as an efficient 'off-on' sensor for cysteine, showing recovery of 1 from Hg²⁺-2·1 complex. Therefore, the sensor 1 can be employed as a practical fluorescent chemosensor for recognition of Hg²⁺ and cysteine in aqueous solution.

Original language	English
Pages (from-to)	38308-38315
Number of pages	8
Journal	RSC Advances
Volume	5
Issue number	48
DOIs	https://doi.org/10.1039/c5ra06601h
State	Published - 2015

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title = "Fluorescence 'on-off-on' chemosensor for the sequential recognition of Hg2+ and cysteine in water",

abstract = "A simple fluorescent chemosensor 1 for the sequential detection of Hg2+ and cysteine was developed by combination of benzene-1,2-diamine and 6-bromopyridine-2-carboxaldehyde. The sensor 1 exhibited an 'on-off' fluorescent quenching response in the presence of Hg2+, and could be applied for detection of Hg2+ with a good recovery in water samples. The sensing mechanism of 1 for Hg2+ was supported by theoretical calculations. Moreover, the resulting Hg2+-2·1 complex acted as an efficient 'off-on' sensor for cysteine, showing recovery of 1 from Hg2+-2·1 complex. Therefore, the sensor 1 can be employed as a practical fluorescent chemosensor for recognition of Hg2+ and cysteine in aqueous solution.",

author = "Choi, \{Ye Won\} and Lee, \{Jae Jun\} and You, \{Ga Rim\} and Cheal Kim",

note = "Publisher Copyright: {\textcopyright} The Royal Society of Chemistry 2015.",

year = "2015",

doi = "10.1039/c5ra06601h",

language = "English",

volume = "5",

pages = "38308--38315",

journal = "RSC Advances",

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T1 - Fluorescence 'on-off-on' chemosensor for the sequential recognition of Hg2+ and cysteine in water

AU - Choi, Ye Won

AU - Lee, Jae Jun

AU - You, Ga Rim

AU - Kim, Cheal

N1 - Publisher Copyright: © The Royal Society of Chemistry 2015.

PY - 2015

Y1 - 2015

N2 - A simple fluorescent chemosensor 1 for the sequential detection of Hg2+ and cysteine was developed by combination of benzene-1,2-diamine and 6-bromopyridine-2-carboxaldehyde. The sensor 1 exhibited an 'on-off' fluorescent quenching response in the presence of Hg2+, and could be applied for detection of Hg2+ with a good recovery in water samples. The sensing mechanism of 1 for Hg2+ was supported by theoretical calculations. Moreover, the resulting Hg2+-2·1 complex acted as an efficient 'off-on' sensor for cysteine, showing recovery of 1 from Hg2+-2·1 complex. Therefore, the sensor 1 can be employed as a practical fluorescent chemosensor for recognition of Hg2+ and cysteine in aqueous solution.

AB - A simple fluorescent chemosensor 1 for the sequential detection of Hg2+ and cysteine was developed by combination of benzene-1,2-diamine and 6-bromopyridine-2-carboxaldehyde. The sensor 1 exhibited an 'on-off' fluorescent quenching response in the presence of Hg2+, and could be applied for detection of Hg2+ with a good recovery in water samples. The sensing mechanism of 1 for Hg2+ was supported by theoretical calculations. Moreover, the resulting Hg2+-2·1 complex acted as an efficient 'off-on' sensor for cysteine, showing recovery of 1 from Hg2+-2·1 complex. Therefore, the sensor 1 can be employed as a practical fluorescent chemosensor for recognition of Hg2+ and cysteine in aqueous solution.

UR - https://www.scopus.com/pages/publications/84929483896

U2 - 10.1039/c5ra06601h

DO - 10.1039/c5ra06601h

M3 - Article

AN - SCOPUS:84929483896

SN - 2046-2069

VL - 5

SP - 38308

EP - 38315

JO - RSC Advances

JF - RSC Advances

IS - 48

ER -

Fluorescence 'on-off-on' chemosensor for the sequential recognition of Hg²⁺ and cysteine in water

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