Novel acridine-based thiosemicarbazones as 'turn-on' chemosensors for selective recognition of fluoride anion: a spectroscopic and theoretical study.

ABSTRACT: New thiosemicarbazide-linked acridines 3a-c were prepared and investigated as chemosensors for the detection of biologically and environmentally important anions. The compounds 3a-c were found selective for fluoride (F^-) with no affinity for other anions, i.e. ^-OAc, Br^-, I^-, HSO₄^-, SO₄^2-, PO₄^3-, ClO₃^-, ClO₄^-, CN^- and SCN^-. Further, upon the gradual addition of a fluoride anion (F^-) source (tetrabutylammonium fluoride), a well-defined change in colour of the solution of probes 3a-c was observed. The anion-sensing process was studied in detail via UV-visible absorption, fluorescence and

SUBMITTER: Isaac IO 

PROVIDER: S-EPMC6083729 | biostudies-literature | 2018 Jul

REPOSITORIES: biostudies-literature