Jump to main content
Jump to site search


A smart ratiometric red fluorescent chemodosimeter for fluoride based on anthraquinone nosylate

Abstract

The present work reports an smart design of a chemodosimeter viz: 4-(6,11-dihydro-6,11-dioxo-1H-anthra[1,2-d]imidazol-2-yl)phenyl-4-nitrobenzenesulfonate (AH) which recognises F- specifically through naked eye colour change from light yellow to light orange and remarkable ratiometric fluorescence from green to red from the matrix of a large number of similar anions in acetonitrile solution. The sensing mechanism was worked out as fluoride triggered deprotonation of imidazole accompanied with deprotection of nosylate group (p-nitrobenzene sulfonate group). The AH was fully characterized through single crystal X-ray diffraction studies alongwith FT-IR, 1H & 13C NMR and ESI-MS. The detection limit calculated through fluorescent titration was found to be 3.45×10-10 M. The theoretical calculations at density functional level were in consonance with experimental observations. AH also showed its practical applicability in the form of test paper strips.

Back to tab navigation
Please wait while Download options loads

Supplementary files

Publication details

The article was accepted on 15 May 2017 and first published on 16 May 2017


Article type: Paper
DOI: 10.1039/C7NJ01575E
Citation: New J. Chem., 2017, Accepted Manuscript
  •   Request permissions

    A smart ratiometric red fluorescent chemodosimeter for fluoride based on anthraquinone nosylate

    Shweta, A. Kumar, N. -, S. K. Ashthana and K. K. Upadhyay, New J. Chem., 2017, Accepted Manuscript , DOI: 10.1039/C7NJ01575E

Search articles by author