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Updated: Jun 15, 2026

Photoelectron Imaging of Anions Illustrated by 310 Nm Detachment of F−
Published on: July 27, 2018
Reaction-based sensing of fluoride ions using built-in triggers for intramolecular charge transfer and photoinduced
O Altan Bozdemir1, Fazli Sozmen, Onur Buyukcakir
1UNAM-Institute of Materials Science and Nanotechnology, Bilkent University, Ankara 06800, Turkey.
Abstract:
Two Bodipy derivatives with silyl-protected phenolic functionalities signal fluoride concentrations both in solution and in a poly(methyl methacrylate) matrix. The exact location of the "nascent" phenolate group is important. If it is at the meso position, photoinduced electron transfer is triggered; however, if it is in full conjugation via a styryl moiety to the Bodipy core, strong intramolecular charge transfer is triggered, resulting in a large red shift in the absorbance peak. In either case, a selective methodology for fluoride sensing is the invariable result.
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