Abstract
Different tris(styryl)benzenes bearing a tert-butyldimethylsilyl (TBDMS) group at the periphery have been efficiently prepared by a straightforward protocol. The potential of these compounds as fluorescent sensors for fluoride has been studied. In all cases, this anion caused significant quenching of the emission intensity upon cleavage of the silyl ether group and the formation of the corresponding phenolate anion. All compounds displayed good selectivity over a variety of other anions. They could sense fluoride ions in aqueous solutions with sensitivity in the lower μM range when dissolved in DMSO, demonstrating the validity of this approach.
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