A novel fluorescent sensor for Al3+ based on a new diarylethene with a naphthalimide unit

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

来源：Journal of Photochemistry and Photobiology A: Chemistry , 2017, 338: 192-200.

DOI：10.1016/j.jphotochem.2017.02.011

• Diarylethene
• Fluorescent sensor
• Naphthalimide
• Multi-controllable behavior
• Logic circuit

A new fluorescent sensor for Al3+ based on a photochromic diarylethene with a naphthalimide unit has been synthesized. Its photochromic and fluorescent properties with UV/Vis light and Al3+/EDTA were investigated systematically in methanol. The fluorescent sensor was highly selective toward Al3+ with obvious emission intensity change (enhanced more than 20-fold) and color change (dark to orange yellow). The Job's plot showed the 1:1 complex of the sensor with Al3+. Moreover, the complexation mechanism of the sensor with Al3+ was confirmed by the ESI-MS and H-1 NMR titration experiment. The binding constant (Ka) was 2.55 x 105 mol-lL and the limit of detection of the sensor for Al3+ was calculated to be 1.75 x 10(-7) mol L-1. In addition, the metal-responsive fluorescence behavior of the sensor was applied successfully to the construction of molecular logic circuit.

• 出版日期2017-4-1
• 单位江西科技师范大学