Naked-eye detection of Fe3+ and Ru3+ in water: Colorimetric and ratiometric sensor based on per-6-amino-beta-cyclodextrin/p-nitrophenol

作者：Suresh Palaniswamy; Azath Ismail Abulkalam; Pitchumani Kasi^*

来源：Sensors and Actuators B: Chemical , 2010, 146(1): 273-277.

DOI：10.1016/j.snb.2010.02.047

• Per-6-amino-beta-cyclodextrin
• p-Nitrophenol
• Colorimetric sensor
• Fe3+ ion
• Ru3+ ion
• Aqueous medium

Using per-6-amino-beta-cyclodextrin as a supramolecular host and p-nitrophenol as a spectroscopic probe, a novel, colorimetric and ratiometric sensor is developed for transition metal cations Fe3+ and Ru3+ in water. Binding of these cations causes an appreciable color change from intense yellow to colorless. This naked-eye sensing of Fe3+ and Ru3+ is rationalized on the basis of electronegativity and HSAB theory.

• 出版日期2010-4-8