New fluorescent chemosensor based on exciplex signaling mechanism.
[reaction: see text]. A novel fluorescent chemosensor (compound 1) containing aminonaphthol, which selectively recognizes fluoride anion with high sensitivity, was synthesized. The fluorescence of compound 1 was quenched rapidly by fluoride ion, and a new peak at a longer wavelength emerged concurrently, which constituted the signature for fluoride detection. The mechanism of exciplex formation was proposed for the interesting observation.
Wu
Jia-Sheng
JS
Nano-Organic Photoelectronic Laboratory, Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing, 100101, PR China.
Zhou
Jian-Hua
JH
Wang
Peng-Fei
PF
Zhang
Xiao-Hong
XH
Wu
Shi-Kang
SK