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Novel anthraquinone-modified calix[4]arene was synthesized by click chemistry and exhibited selective fluorescent enhancement in the presence of Ca2+, which is attributed to photo-induced electron-transfer effect from the 1,2,3-triazole ring. The enhanced fluorescence was further quenched by F− ion. Thus, the potential Ca2+ and F− ion switched INHIBIT logic gate has been constructed.
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Zhan et al. (2012) studied this question.
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