A New Rhodamine-Based Colorimetric Cyanide Chemosensor: Convenient Detecting Procedure and High Sensitivity and Selectivity

作者：Lou Xiaoding; Qiang Li; Qin Jingui; Li Zhen^*

来源：ACS Applied Materials & Interfaces, 2009, 1(11): 2529-2535.

DOI：10.1021/am900467b

• colorimetric chemosensor
• cyanide
• indirect method
• rhodamine-based dye
• high sensitivity
• visual detection

By applying an indirect strategy, a new rhodamine-based dye (1) was successfully developed as a colorimetric chemosensor for the sensitive detection of cyanide. In the presence of copper ions, the colorless solution of compound I changed to magenta: however, upon the addition Of trace cyanide, the magenta color faded to colorless immediately, with a detection limit as low as 0.013 ppm (Delta A = 0.054), much lower than the Maximum Contaminant Level for cyanide In drinking water (0.20 ppm) set by the US Environmental Protection Agency. Other anions, including Cl(-), l(-), lO(3)(-), SO(4)(2-), NO(2)(-), Br(-), H(2)PO(4)(-), F(-), SCN(-), HSO(4)(-), and ClO(4)(-), had nearly no influence on the probing behavior of dye I toward cyanide.

• 出版日期2009-11
• 单位武汉大学