Journal
DYES AND PIGMENTS
Volume 81, Issue 2, Pages 161-165Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.dyepig.2008.10.003
Keywords
Halide sensors; Acridizinium salts; Stern-Volmer constants; Fluorescence lifetime
Funding
- Netherlands Organization for Scientific Research (NWO)
- Natural Sciences and Engineering Research Council of Canada (NSERC)
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A series of acridizinium (benzo[b]quinolizinium) salts containing methoxy, fluoro and chloro substituents; were synthesized and their spectroscopic properties and sensitivity towards halide quenching in water were determined. The salts have substantially improved properties over the commonly employed quinolinium and acridinium fluorophores for the sensing of bromide and iodide ions. Of the substituted acridiziniums investigated, 8,10-difluoro-acridizinium bromide has the best combination of properties as a bromide or iodide sensor. (C) 2008 Elsevier Ltd. All rights reserved.
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