A colorimetric and fluorescent chemosensor for selective detection of Cu2+ based on a new diarylethene with a benzophenone hydrazone unit

作者：Li, Lili; Li, Hui^*; Liu, Gang; Pu, Shouzhi^*

来源：Luminescence, 2017, 32(8): 1473-1481.

DOI：10.1002/bio.3347

• benzophenone hydrazone
• colorimetric and fluorescent chemosensor
• diarylethene
• logic circuit
• photochromism

A new photochromic diarylethene based on benzophenone hydrazone has been synthesized. Its photochromic and fluorescent properties changed upon alternating irradiation with UV/Vis light and adding Cu2+/EDTA in methanol, which showed that the diarylethene could be served as a colorimetric and fluorescent chemosensor for selective detection of Cu2+ based on internal charge transfer processes. The colorimetric and turn-off fluorescent selective detection of Cu2+ was attributed to the 2:1 complex of the diarylethene and Cu2+. The binding constant (Ka) was 1.53x10(4)L mol(-1) and the limit of detection of the diarylethene for Cu2+ was calculated to be 1.45x10(-6)mol L-1. In addition, the metal-responsive photochromic behavior of diarylethene was applied successfully to the construction of a molecular logic circuit.

• 出版日期2017-12
• 单位江西科技师范大学