A Unique Thiosemicarbazide-Based Colorimetric Chemosensor for Fe2+ in Pure Aqueous Solution with the Lowest Detection Limit

Haeri So; Minji Lee; Cheal Kim

doi:10.1002/slct.202002062

A Unique Thiosemicarbazide-Based Colorimetric Chemosensor for Fe²⁺ in Pure Aqueous Solution with the Lowest Detection Limit

Haeri So, Minji Lee, Cheal Kim

Dept. of Fine Chemistry

Seoul National University of Science and Technology (SNUST)

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

7 Scopus citations

Abstract

A unique colorimetric chemosensor Hy-bp based on thiosemicarbazide was prepared. Hy-bp showed an obvious red-shifted spectrum and unique color change from colorless to deep green only for Fe²⁺. Detection limit for Fe²⁺ was 0.34 μM, which is the lowest among those of colorimetric chemosensors previously reported for Fe²⁺ in pure aqueous solution. Hy-bp can be utilized in paper strips and water samples as a colorimetric sensor for detecting Fe²⁺. The sensing mechanism of Hy-bp for Fe²⁺ was demonstrated by UV-vis spectroscopy, Job plot, FT-IR and ¹H NMR titrations.

Original language	English
Pages (from-to)	10521-10525
Number of pages	5
Journal	ChemistrySelect
Volume	5
Issue number	34
DOIs	https://doi.org/10.1002/slct.202002062
State	Published - 14 Sep 2020

Keywords

colorimetric chemosensor
Fe
paper strips
thiosemicarbazide
water samples

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10.1002/slct.202002062

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abstract = "A unique colorimetric chemosensor Hy-bp based on thiosemicarbazide was prepared. Hy-bp showed an obvious red-shifted spectrum and unique color change from colorless to deep green only for Fe2+. Detection limit for Fe2+ was 0.34 μM, which is the lowest among those of colorimetric chemosensors previously reported for Fe2+ in pure aqueous solution. Hy-bp can be utilized in paper strips and water samples as a colorimetric sensor for detecting Fe2+. The sensing mechanism of Hy-bp for Fe2+ was demonstrated by UV-vis spectroscopy, Job plot, FT-IR and 1H NMR titrations.",

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AU - Kim, Cheal

PY - 2020/9/14

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N2 - A unique colorimetric chemosensor Hy-bp based on thiosemicarbazide was prepared. Hy-bp showed an obvious red-shifted spectrum and unique color change from colorless to deep green only for Fe2+. Detection limit for Fe2+ was 0.34 μM, which is the lowest among those of colorimetric chemosensors previously reported for Fe2+ in pure aqueous solution. Hy-bp can be utilized in paper strips and water samples as a colorimetric sensor for detecting Fe2+. The sensing mechanism of Hy-bp for Fe2+ was demonstrated by UV-vis spectroscopy, Job plot, FT-IR and 1H NMR titrations.

AB - A unique colorimetric chemosensor Hy-bp based on thiosemicarbazide was prepared. Hy-bp showed an obvious red-shifted spectrum and unique color change from colorless to deep green only for Fe2+. Detection limit for Fe2+ was 0.34 μM, which is the lowest among those of colorimetric chemosensors previously reported for Fe2+ in pure aqueous solution. Hy-bp can be utilized in paper strips and water samples as a colorimetric sensor for detecting Fe2+. The sensing mechanism of Hy-bp for Fe2+ was demonstrated by UV-vis spectroscopy, Job plot, FT-IR and 1H NMR titrations.

KW - colorimetric chemosensor

KW - Fe

KW - paper strips

KW - thiosemicarbazide

KW - water samples

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JO - ChemistrySelect

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ER -

A Unique Thiosemicarbazide-Based Colorimetric Chemosensor for Fe²⁺ in Pure Aqueous Solution with the Lowest Detection Limit

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