Excimer–monomer switch: A reaction-based approach for selective detection of fluoride

Qiao Song, Angela Bamesberger, Lingyun Yang, Haley Houtwed, Haishi Cao

Research output: Contribution to journalArticlepeer-review

26 Scopus citations


A N-aryl-1,8-naphthalimide based sensor (ES-1) bearing a trimethylsilyl ether has been synthesized by a two-step reaction for quantitative detection of fluoride (F). ES-1 exhibited monomer/excimer emissions at 410 and 524 nm respectively in CH2Cl2. In the presence of F, the desilylation of trimethylsilyl ether caused decay of the excimer emission as well as enhancement of the monomer emission to give a ratiometric signal. The fluoride-triggered desilylation showed a high reaction rate and high affinity to F over nine other interfering anions. ES-1 provided a novel fluorescence assay based on excimer–monomer switch of N-aryl-1,8-naphthalimide to quantitatively measure F with a detection limit of 0.133 ppm.

Original languageEnglish (US)
Pages (from-to)3588-3592
Number of pages5
Issue number14
StatePublished - Jun 16 2013

ASJC Scopus subject areas

  • Analytical Chemistry
  • Biochemistry
  • Environmental Chemistry
  • Spectroscopy
  • Electrochemistry


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