Abstract
We developed a new chromogenic and fluorescent "off-on" 1, 8-naphthalimide-derivated chemosensor 1 based on an F--triggered desilylation reaction. It showed significant variations in UV/visible absorption (510nm) and fluorescence emission wavelength (580nm) for selective detection of fluorides in THF/H2O system (v/v, 50:50). Moreover, chemodosimeter 1-loaded test strips were successfully fabricated todetect fluorides efficiently.
Highlights
Fluoride ions widely exist in the nature and organisms, and play an extremely important role in the metabolic process of organisms
We developed a new chromogenic and fluorescent "off–on" 1,8-naphthalimide-derivated chemosensor 1 based on an F−-triggered desilylation reaction
The addition of fluorideions (1.8 equiv., TBAF), the new absorption peak at 510 nm was increased followed by the unique color change from colorless to yellow, indicating that fluoride-induced desilylation reaction take places and the potential 3-hydroxy-4cyano-1,8-naphthaleneimide was produced
Summary
Fluoride ions widely exist in the nature and organisms, and play an extremely important role in the metabolic process of organisms. We developed a new chromogenic and fluorescent "off–on" 1,8-naphthalimide-derivated chemosensor 1 based on an F−-triggered desilylation reaction. 2. The test strips loaded probe 1 exhibited efficiently detection of fluorides with significant changes in fluorescence.
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