Azoaniline-based rapid and selective dual sensor for copper and fluoride ions with two distinct output modes of detection

作者：Gupta Moumita; Balamurugan A; Lee Hyung il^*

来源：Sensors and Actuators B: Chemical , 2015, 211: 531-536.

DOI：10.1016/j.snb.2015.01.125

• Dual sensor
• Copper sensor
• Fluoride sensor
• Azoaniline
• Colorimetric
• Fluorometric

An azoaniline-containing chemosensor was designed for the efficient and selective detection of Cu2+ and F-in dual sensing modes. The diazotization reaction between 4-aminophenol and 1,3-phenylenediamine led to the formation of (E)-4-((2,4-diaminophenyl) diazenyl)phenol (A1). The hydroxyl group of A1 was protected with tert-butyldimethylsilane, leading to the target material, (E)-4-((4(( tert-butyldimethylsilyl)oxy) phenyl)diazenyl)benzene-1,3-diamine (A2). This probe showed excellent detection sensitivity and selectivity toward Cu2+ and F-with colorimetric and turn-on fluorescence output signals. Absorption and emission studies were conducted to examine the dual sensing abilities of this probe with the sequential addition of F-followed by Cu2+ and vice versa. These results showed thatthe sequential addition of F-followed by Cu2+ resulted in excellent dual sensing responses compared to the other method of addition. A single probe can detect both Cu2+ and F-sequentially as well as independently.

• 出版日期2015-5