Ratiometric fluorescence chemodosimeters for fluoride anion based on pyrene excimer/monomer transformation

摘要

Two pyrene dimers containing an-O-Si-Si-O- or-O-Si-O-linkage have been designed which exhibit ratiometric excimer/ monomer emission upon fluoride anion induced Si-O bond cleavage. Incorporation of the probe into water soluble polymeric nanoparticles enhances its intracellular uptake and displays ratiometric fluorescent sensing for F~- in living cells.