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A new pyrenyl appended hexahomotrioxacalix[3]arene L featuring 1,2,3-triazole linkers was synthesized as a fluorescent chemosensor for Zn2+ in mixed aqueous media. It exhibited high affinity toward Zn2+, and the monomer and excimer emission of the pyrene moieties could be adjusted. The binding stoichiometry of the L·Zn2+ complex was determined to be 1:1, and the association constant (Ka) was found...
A new pyrene-armed hexahomotrioxacalix[3]arene L has been synthesized, which exhibits a pronounced fluorescence enhancement response toward Cu2+ ions via a Zn2+ or Cd2+ triggered synergistic effect. Additionally, the L·Cu2+ complex can subsequently serve as a sensor for F− via anion-induced demetallation. The fluorescence responses by the input of Cu2+, Zn2+/Cd2+ and F− can be constructed as a combinational...
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