A highly selective fluorescence switch for Cu2+ and Fe3+ based on a new diarylethene with a triazole-linked rhodamine 6G unit

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

来源：Tetrahedron, 2018, 74(33): 4390-4399.

DOI：10.1016/j.tet.2018.07.002

• Diarylethene
• Rhodamine 6G
• Photochromism
• Copper ion
• Iron ion

A new diarylethene compound with a triazole-linked rhodamine 6G unit attached to the imino group (10) was designed and synthesized. According to the test results, the solution color and fluorescence color of diarylethene can be modulated by lights and metal ions. The solution color could change from colorless to light purple when irradiated with UV light. When Cu2+ was added to the diarylethene solution, the color of diarylethene solution became blue, the fluorescence color turned from dark to bright yellow. Although the solution color did not change by adding Fe3+, its fluorescence color varied from dark to yellow. Moreover, it was found that the complex ratio of the diarylethene to Cu2+ was 1:1 and the binding stoichiometry of the diarylethene to Fe3+ was also 1:1 based on the data of NMR, MS, and other experiments. Based on these findings, photochromic figure of the diarylethene with UV/Vis light, Cu2+ and Fe3+ was constructed. Furthermore, the logic circuit was designed by input signals (ultraviolet stimulus, visible light stimulus, Cu2+ (or Fe3+) and EDTA) and an output signal (fluorescent intensity at 566 nm (or 575 nm)).

• 出版日期2018-8-16
• 单位江西科技师范大学