A one-pot fluorogenic cascade cyclization reaction via BF3-sensing

Abstract

(E)-3-Phenyl-1-(2-(phenylethynyl) phenyl) prop-2-en-1-one is shown as a chemodosimetric sensor where it selectively senses toxic BF₃, scrutinized through electronic spectral analysis and recognized with the naked eye. The probable binding mechanism is proposed based on the electronic spectral analysis, NMR titration and the ESI-MS technique. The incredible increase in fluorescence intensity (60-fold) in less than 2 minutes along with an extremely low detection limit (6.36 × 10⁻¹⁰ M) in a range of 0–50 μl make it function as a proficient gas phase BF₃ sensor with synchronized detection in a portable form.