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A novel diarylethene-based fluorescent chemosensor containing a quinoline unit (1o) had been designed and synthesized. 1o display good photochromic ability and fluorescent switch property by alternately irradiating UV/vis light. The chemosensor showed high “Turn-off” fluorescent selectivity for Hg2+ by competitive tests of the fluorescence reaction in the presence other ions in acetonitrile solution. The stoichiometry between the compound 1o and Hg2+ was 1:1 by Job’s plot curve and HRMS analysis. In addition, the LOD for Hg2+ was calculated as 60 nM. The fluorescence emission can be back to the “Turn-on” state by adding EDTA. Based on these facts, a molecular logic gate that including four input signals (UV/vis and Hg2+/EDTA) and one output signal (fluorescent intensity at 491 nm) was designed.

A novel diarylethene-based uorescent chemosensor containing a quinoline unit (1o) had been designed and synthesized. 1o display good photochromic ability and uorescent switch property by alternately irradiating UV/vis light. The chemosensor showed high "Turn-off" uorescent selectivity for Hg 2+ by competitive tests of the uorescence reaction in the presence other ions in acetonitrile solution. The stoichiometry between the compound 1o and Hg 2+ was 1:1 by Job's plot curve and HRMS analysis. In addition, the LOD for Hg 2+ was calculated as 60 nM. The uorescence emission can be back to the "Turnon" state by adding EDTA. Based on these facts, a molecular logic gate that including four input signals (UV/vis and Hg 2+ /EDTA) and one output signal ( uorescent intensity at 491 nm) was designed. be modulated by irradiating UV/vis light, based on the fact, a logic gate circuit based on four inputs and one output was designed.

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