A new sensitive symmetric fluorescein-linked diarylethene chemosensor for Hg-2(+) detection

作者：Kang, Huimin; Xu, Huitao; Fan, Congbin; Liu, Gang^*; Pu, Shouzhi^*

来源：Journal of Photochemistry and Photobiology A: Chemistry , 2018, 367: 465-470.

DOI：10.1016/j.jphotochem.2018.09.001

• Diarylethene
• Fluorescein
• Photochromic
• Hg(2)(+ )recognition
• Logic circuit

A novel symmetrical diarylethene derivative bearing a fluorescein unit was synthesized and its application as a fluorescent probe for the detection of metal ions in environmental, biological, and industrial samples was explored. It displayed both highly sensitive and selective fluorescent and colorimetric responses toward Hg-2(+) in the binding stoichiometry of 1:1. The fluorescence intensity of the derivative was significantly enhanced in the presence of Hg-2(+) with the blue-shift from 550 nm to 504 nm. In addition, it exhibited multiple controllable switching behaviors under light and chemical stimulations. Based on its "OFF-ON-OFF" fluorescence switching behaviors, a combinational logic gate function was constructed using the light and chemical stimuli as the inputs and the fluorescence intensity at 504 nm as the output.

• 出版日期2018-12-1
• 单位江西科技师范大学