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

SUBMITTER: Shi H 

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

REPOSITORIES: biostudies-literature