A coumarin-based colorimetric and fluorescent probe for the highly selective detection of Au3+ ions

作者：Wang, Qi; Feng, Yan^*; Jiang, Jun; Wang, Wen-Juan; Chen, Jiu-You; Sheng, Hong-Ting; Meng, Xiang-Ming; Zhu, Man-Zhou

来源：Chinese Chemical Letters, 2016, 27(9): 1563-1566.

DOI：10.1016/j.cclet.2016.02.021

• Coumarin
• Alkyne
• Au3+
• Colorimetric
• Fluorescent probe

We develop a novel coumarin-alkyne derivative (NC7-AL), which can specifically react with Au3+ and give a colorimetric and fluorescent "turn-on" response toward Au3+. Notably, other alkynophilic metal species such as Au+, Ag+, Pd2+, Ni2+, Cu2+, and Hg2+ do not produce an interfering signal. A good linear relationship between emission intensity at 420 nm and Au3+ concentration from 0 to 2 equivalent is observed, and the detection limit (3 sigma/k) is estimated to be ca. 3.58 nmol/L. Harnessing the Au3+-induced color change from light yellow to colorless, we find that NC7-AL-based modified TLC plate can be used for convenient naked-eye detection of Au3+.

• 出版日期2016-9
• 单位安徽大学