A NBD-based selective colorimetric and fluorescent chemosensor for Hg 2+

Jin Hoon Kim; Jin Young Noh; In Hong Hwang; Jae Jun Lee; Cheal Kim

doi:10.1016/j.tetlet.2013.05.074

A NBD-based selective colorimetric and fluorescent chemosensor for Hg ²⁺

Jin Hoon Kim, Jin Young Noh, In Hong Hwang, Jae Jun Lee, Cheal Kim

Dept. of Fine Chemistry

Seoul National University of Science and Technology (SNUST)

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

43 Scopus citations

Abstract

A new NBD-based sensor bearing a dipicolylamine derivative, (2-pyridylmethyl)(2-quinolylmethyl)amine (1), was synthesized, and its chromogenic and fluorogenic behaviors toward various metal ions were investigated in methanol solution. Chemosensor 1 selectively detected Hg ²⁺ ions through color change from yellow to colorless. In addition, chemosensor 1 exhibited highly Hg²⁺-selective ON-OFF fluorescence quenching behavior and was shown to discriminate various competing metal ions, particularly, such as Cu²⁺, Ag⁺, and Pb²⁺. The binding mode of 1-Hg²⁺ was found to be a 1:2 complex formation, based on Job plot and ¹H NMR titration.

Original language	English
Pages (from-to)	4001-4005
Number of pages	5
Journal	Tetrahedron Letters
Volume	54
Issue number	30
DOIs	https://doi.org/10.1016/j.tetlet.2013.05.074
State	Published - 24 Jul 2013

Keywords

Chemosensor
Colorimetric
Fluorescent
Mercury
Naked-eye

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10.1016/j.tetlet.2013.05.074

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title = "A NBD-based selective colorimetric and fluorescent chemosensor for Hg 2+",

abstract = "A new NBD-based sensor bearing a dipicolylamine derivative, (2-pyridylmethyl)(2-quinolylmethyl)amine (1), was synthesized, and its chromogenic and fluorogenic behaviors toward various metal ions were investigated in methanol solution. Chemosensor 1 selectively detected Hg 2+ ions through color change from yellow to colorless. In addition, chemosensor 1 exhibited highly Hg2+-selective ON-OFF fluorescence quenching behavior and was shown to discriminate various competing metal ions, particularly, such as Cu2+, Ag+, and Pb2+. The binding mode of 1-Hg2+ was found to be a 1:2 complex formation, based on Job plot and 1H NMR titration.",

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T1 - A NBD-based selective colorimetric and fluorescent chemosensor for Hg 2+

AU - Kim, Jin Hoon

AU - Noh, Jin Young

AU - Hwang, In Hong

AU - Lee, Jae Jun

AU - Kim, Cheal

PY - 2013/7/24

Y1 - 2013/7/24

N2 - A new NBD-based sensor bearing a dipicolylamine derivative, (2-pyridylmethyl)(2-quinolylmethyl)amine (1), was synthesized, and its chromogenic and fluorogenic behaviors toward various metal ions were investigated in methanol solution. Chemosensor 1 selectively detected Hg 2+ ions through color change from yellow to colorless. In addition, chemosensor 1 exhibited highly Hg2+-selective ON-OFF fluorescence quenching behavior and was shown to discriminate various competing metal ions, particularly, such as Cu2+, Ag+, and Pb2+. The binding mode of 1-Hg2+ was found to be a 1:2 complex formation, based on Job plot and 1H NMR titration.

AB - A new NBD-based sensor bearing a dipicolylamine derivative, (2-pyridylmethyl)(2-quinolylmethyl)amine (1), was synthesized, and its chromogenic and fluorogenic behaviors toward various metal ions were investigated in methanol solution. Chemosensor 1 selectively detected Hg 2+ ions through color change from yellow to colorless. In addition, chemosensor 1 exhibited highly Hg2+-selective ON-OFF fluorescence quenching behavior and was shown to discriminate various competing metal ions, particularly, such as Cu2+, Ag+, and Pb2+. The binding mode of 1-Hg2+ was found to be a 1:2 complex formation, based on Job plot and 1H NMR titration.

KW - Chemosensor

KW - Colorimetric

KW - Fluorescent

KW - Mercury

KW - Naked-eye

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M3 - Article

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VL - 54

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EP - 4005

JO - Tetrahedron Letters

JF - Tetrahedron Letters

IS - 30

ER -

A NBD-based selective colorimetric and fluorescent chemosensor for Hg ²⁺

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Keywords

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