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fluoride ion, which resulted in obvious changes in the absorption
and fluorescence spectra. The reversible chemical switch could be
obtained by proton stimuli.{ Thus, this system constitutes a multi-
mode complete reversible switch by light, thermal stimuli, fluoride
ions as well as by protons.
In summary, we have succeeded in constructing a BTE-NA-
(chol)2 multiple switching system responding to light, thermal
stimuli, fluoride anions, proton stimuli and a photochromic
fluorescent organogel based on bisthienylethene bridged naphtha-
limides. It exhibits excellent photochromic properties and defined
thermo reversible properties in an organogel system. At the same
time, by taking advantage of the ability of F2 and protons to
induce obviously different absorption and fluorescence spectra of
BTE-NA-(chol)2 in solution under sequential alternating UV/Vis
light irradiation, a multiple switch is realized, which makes it
promising application in the fields of opto- and electronic smart
materials, logic gate, fluorescence sensors and other molecular
photonic devices.
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This work was supported by NSFC/China (20476027;
90401026) and Scientific Committee of Shanghai.
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