A highly sensitive fluorescent sensor for Zn2+ based on diarylethene with an imidazole unit

作者：Wang, Zhen; Cui, Shiqiang^*; Qiu, Shouyu; Zhang, Zhihui; Pu, Shouzhi^*

来源：Spectrochimica Acta Part A: Molecular and Biomolecular Spectroscopy , 2018, 205: 21-28.

DOI：10.1016/j.saa.2018.07.014

• Photochromic
• Diarylethene
• Fluorescent sensor
• Logic circuit

A new sensitive sensor for Zn2+ based on diarylethene with an imidazole unit has been synthesized. Its photochromic and fluorescent behaviors have been systematically investigated by the stimulation of UV/vis lights and Zn2+ ion in THE solution. It displayed a dual-mode with a "turn on" fluorescence and color response to Zn2+. With the addition of Zn2+, the emission intensity enhanced 26-fold, accompanied by the fluorescent color changed from dark red to bright yellow. The 1:1 stoichiometry between the sensor and Zn2+ was verified by Job's plot and MS. The LOD for Zn2+ was determined to be 6.12 x 10(-9) mol L-1. Furthermore, a logic circuit was designed by using the fluorescence at 578 nm as output and the combinational stimuli of UV/vis and Zn2+/EDTA as inputs.

• 出版日期2018-12-5
• 单位江西科技师范大学