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Highly Sensitive Ratiometric Fluorescent Paper Sensors for the Detection of Fluoride Ions.

ABSTRACT: Two sensitive and ratiometric fluorescent probes (probe I and probe II) were developed for the detection of fluoride ions. Probe I can detect fluoride ions quantitatively within a range of 0-6 ?M and a detection limit of 73 nM, while probe II has a range of 0-40 ?M and a detection limit of 138 nM. The test strips from probe I are quickly able to recognize F- (5 min) inside of the F- safety level in drinking water (1.0 mg/L, ?5 ?M) under 254 nm ultraviolet light, and the test strips from probe II quickly recognize F- (12 min) in dangerously high F- levels in water (4.0 mg/L, ?21 ?M) under 254 nm ultraviolet light. This combination of fluorescent paper sensors from probe I and probe II can be used as a simple and convenient tool to determine whether water is safe to drink or dangerous.

SUBMITTER: Wu X

PROVIDER: S-EPMC6648022 | biostudies-literature | 2019 Mar

REPOSITORIES: biostudies-literature

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Highly Sensitive Ratiometric Fluorescent Paper Sensors for the Detection of Fluoride Ions.

Wu Xiaoming X Wang Hao H Yang Shaoxiang S Tian Hongyu H Liu Yongguo Y Sun Baoguo B

ACS omega 20190305 3

Two sensitive and ratiometric fluorescent probes (probe I and probe II) were developed for the detection of fluoride ions. Probe I can detect fluoride ions quantitatively within a range of 0-6 μM and a detection limit of 73 nM, while probe II has a range of 0-40 μM and a detection limit of 138 nM. The test strips from probe I are quickly able to recognize F<sup>-</sup> (5 min) inside of the F<sup>-</sup> safety level in drinking water (1.0 mg/L, ∼5 μM) under 254 nm ultraviolet light, and the tes ...[more]

PMID: 31459676

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