Analytical Sciences

Abstract − Analytical Sciences, 35(11), 1189 (2019).

Naphthalimide-based Probe for the Detection of Hypochlorite in a Near-perfect Aqueous Solution
Su Chan LEE and Cheal KIM
Department of Fine Chem., Seoul National University of Science and Technology, Seoul 138-733, Korea
A novel fluorescent turn-off sensor JM for hypochlorite was synthesized. JM showed a remarkable selectivity for ClO over diverse competitive analytes, including reactive oxygen species (ROS), via deprotonation reaction. Detection limit for ClO turned out to be 0.60 μM. Sensor JM successfully determined ClO in natural water samples with satisfactory recovery. The sensing mechanism of JM to hypochlorite was demonstrated by fluorescent and UV-visible spectroscopy, ESI-mass, NMR titration and TD-DFT calculations.