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A simple colorimetric and ratiometric fluoride ion probe with large color change.

ABSTRACT: Two colorimetric and ratiometric fluoride ion probes SHJ-1 and SHJ-2 based on the acylhydrazone skeleton have been developed. Among the eight anions (F^-, Cl^-, Br^-, I^-, ClO₄ ^-, H₂PO₄ ^-, HSO₄ ^-, CH₃COO^-), the present probes showed high selectivity and sensitivity toward fluoride ion detection with obvious color change. Notably, the probe SHJ-1 exhibited a red shift of 145 nm upon fluoride sensing, which is the largest value among fluoride ion probes based on acylhydrazone derivates to date. ¹HNMR titration study and theoretical calculations suggested that the strong binding of the probe SHJ-1 to fluoride as well as the further deprotonation may facilitate the intramolecular charge transfer transition. These two probes are 1 : 1 complexed with fluoride ions, and the detection limits were calculated to be 1.24 μM for SHJ-1 and 15.73 μM for SHJ-2.

SUBMITTER: Shi H

PROVIDER: S-EPMC8690253 | biostudies-literature | 2020 Dec

REPOSITORIES: biostudies-literature

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A simple colorimetric and ratiometric fluoride ion probe with large color change.

Shi Heng H Chen Hongjin H Li Xiangguo X Xing Jieni J Zhang Gang G Zhang Rui R Liu Jian J

RSC advances 20201221 1

Two colorimetric and ratiometric fluoride ion probes SHJ-1 and SHJ-2 based on the acylhydrazone skeleton have been developed. Among the eight anions (F-, Cl-, Br-, I-, ClO4 -, H2PO4 -, HSO4 -, CH3COO-), the present probes showed high selectivity and sensitivity toward fluoride ion detection with obvious color change. Notably, the probe SHJ-1 exhibited a r ...[more]

PMID: 35423067

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