Fluorescent Selective Chemosensor for Fluoride Ion with Pyrene Based on Triphenylphosphine

In conclusion, pyrene triphenylphosphine derivative 1 was synthesized successfully by the reaction of triphenylphosphine with 2, which only showed a dramatic color and fluorescence change when treated with fluoride ions. The high selectivity for fluoride can be attributed to deprotonation of the methylene protons. Design and development of artificial molecular systems for sensing anions in biologically relevant conditions is a challenging task in supramolecular chemistry. In particular, sensing fluoride anion has attracted increasing interest in the molecular recognition community because of its pivotal importance in many areas of biological and chemical sciences