A diaminomaleonitrile based selective colorimetric chemosensor for copper(ii) and fluoride ions

Tae Geun Jo; Yu Jeong Na; Jae Jun Lee; Myoung Mi Lee; Sun Young Lee; Cheal Kim

doi:10.1039/c5nj00125k

A diaminomaleonitrile based selective colorimetric chemosensor for copper(ii) and fluoride ions

Tae Geun Jo, Yu Jeong Na, Jae Jun Lee, Myoung Mi Lee, Sun Young Lee, Cheal Kim

Dept. of Fine Chemistry

Seoul National University of Science and Technology (SNUST)

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

99 Scopus citations

Abstract

A new and simple colorimetric receptor 1, based on 2,3-diaminomaleonitrile and julolidine moieties, has been synthesized and characterized. 1 showed a selective colorimetric sensing ability for copper(ii) ions by changing color from yellow to colorless, and could be utilized to monitor Cu²⁺ over a wide pH range of 4-12. The detection limit of 1 (2.1 μM) for Cu²⁺ ions is much lower than that recommended by WHO in drinking water (30 μM). Moreover, the receptor 1 can also detect fluoride by color change from yellow to orange, distinguishing the fluoride ions effectively from anions such as CH₃COO^- and CN^-. It was also found that the 1-F^- complex was reversibly bound and could be simply reverted back through treatment with a proper reagent such as HCl. The sensing mechanism for F^- was theoretically supported by DFT and TD-DFT calculations.

Original language	English
Pages (from-to)	2580-2587
Number of pages	8
Journal	New Journal of Chemistry
Volume	39
Issue number	4
DOIs	https://doi.org/10.1039/c5nj00125k
State	Published - 1 Apr 2015

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title = "A diaminomaleonitrile based selective colorimetric chemosensor for copper(ii) and fluoride ions",

abstract = "A new and simple colorimetric receptor 1, based on 2,3-diaminomaleonitrile and julolidine moieties, has been synthesized and characterized. 1 showed a selective colorimetric sensing ability for copper(ii) ions by changing color from yellow to colorless, and could be utilized to monitor Cu2+ over a wide pH range of 4-12. The detection limit of 1 (2.1 μM) for Cu2+ ions is much lower than that recommended by WHO in drinking water (30 μM). Moreover, the receptor 1 can also detect fluoride by color change from yellow to orange, distinguishing the fluoride ions effectively from anions such as CH3COO- and CN-. It was also found that the 1-F- complex was reversibly bound and could be simply reverted back through treatment with a proper reagent such as HCl. The sensing mechanism for F- was theoretically supported by DFT and TD-DFT calculations.",

author = "Jo, \{Tae Geun\} and Na, \{Yu Jeong\} and Lee, \{Jae Jun\} and Lee, \{Myoung Mi\} and Lee, \{Sun Young\} and Cheal Kim",

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doi = "10.1039/c5nj00125k",

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T1 - A diaminomaleonitrile based selective colorimetric chemosensor for copper(ii) and fluoride ions

AU - Jo, Tae Geun

AU - Na, Yu Jeong

AU - Lee, Jae Jun

AU - Lee, Myoung Mi

AU - Lee, Sun Young

AU - Kim, Cheal

PY - 2015/4/1

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N2 - A new and simple colorimetric receptor 1, based on 2,3-diaminomaleonitrile and julolidine moieties, has been synthesized and characterized. 1 showed a selective colorimetric sensing ability for copper(ii) ions by changing color from yellow to colorless, and could be utilized to monitor Cu2+ over a wide pH range of 4-12. The detection limit of 1 (2.1 μM) for Cu2+ ions is much lower than that recommended by WHO in drinking water (30 μM). Moreover, the receptor 1 can also detect fluoride by color change from yellow to orange, distinguishing the fluoride ions effectively from anions such as CH3COO- and CN-. It was also found that the 1-F- complex was reversibly bound and could be simply reverted back through treatment with a proper reagent such as HCl. The sensing mechanism for F- was theoretically supported by DFT and TD-DFT calculations.

AB - A new and simple colorimetric receptor 1, based on 2,3-diaminomaleonitrile and julolidine moieties, has been synthesized and characterized. 1 showed a selective colorimetric sensing ability for copper(ii) ions by changing color from yellow to colorless, and could be utilized to monitor Cu2+ over a wide pH range of 4-12. The detection limit of 1 (2.1 μM) for Cu2+ ions is much lower than that recommended by WHO in drinking water (30 μM). Moreover, the receptor 1 can also detect fluoride by color change from yellow to orange, distinguishing the fluoride ions effectively from anions such as CH3COO- and CN-. It was also found that the 1-F- complex was reversibly bound and could be simply reverted back through treatment with a proper reagent such as HCl. The sensing mechanism for F- was theoretically supported by DFT and TD-DFT calculations.

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A diaminomaleonitrile based selective colorimetric chemosensor for copper(ii) and fluoride ions

Abstract

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