Unlike indigo carmine, this is a "turn-on" sensor and specific for ozone. Indigo carmine cannot distinguish between ozone and some other reactive oxygen species.

About

Summary The inventors have developed a specific fluorescent sensor for ozone. This sensor can detect ozone in the air, in serum, and in pH 7 buffer at 24 to 37 °C by indicating bright fluorescent green. Fluorescent compounds exhibit a fluorescence signal only when the phenolic hydroxyl group is deprotenated. By starting with commercially available 2,7-dichlorofluorescein a two step synthesis of a non-fluorescent compound was prepared by addition of a 1-butenyl group to the phenolic hydroxyl group. The subsequent addition of ozone to this compound resulted in a two step reaction to give a deprotenated fluorescent compound by the elimination of acrolein. This reaction is specific to ozone and does not occur with other reactive oxygenated compounds.          

Register for free for full unlimited access to all innovation profiles on LEO

  • Discover articles from some of the world’s brightest minds, or share your thoughts and add one yourself
  • Connect with like-minded individuals and forge valuable relationships and collaboration partners
  • Innovate together, promote your expertise, or showcase your innovations