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Article Abstract
A dual-function probe NAHH based on naphthalene was synthesized and characterized. Based on the combination effects derived from the inhabitation of photo-induced electron transfer (PET) and CN isomerization, probe NAHH achieved in the recognition of Zn and Al both through obvious fluorescence enhancement and color changes detected by naked eye, respectively. Probe NAHH showed high sensitivity with the limit of detection as low as 3.02 × 10 M for Zn and 7.55 × 10 M for Al, indicated the capability of probe NAHH in trace detection for Zn and Al. The binding ratio of NAHH with Zn and Al were all 1:1 determined by Job plot, and the corresponding association constant was calculated as 8.48 × 10 M and 4.45 × 10 M, respectively. The mechanism was further confirmed by FT-IR, H NMR titration and ESI-MS analysis. Furthermore, probe NAHH was successfully applied in logic gate construction and the detection of Zn and Al in Songhua River and test stripe. Fluorescence imaging experiments confirmed that NAHH could be used to monitor Zn in plant root.
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