Novel Fluorescent Probe for Visualizing and Detecting Trace Amounts of Cesium Particulates

Cesium Green (1), which has been developed by Ariga et al., is a fluorescent probe for detectable trace amounts of cesium particulates. 1 emits green fluorescence under UV irradiation when it coordinates the cesium cation enabling the cesium cation to be detected. Usually, fluorescent detection of cesium particulates occurs after preparation of an aqueous solution. However, in fluorescent detection using 1, cesium particulates on the surface of solids are directly visualized without any pretreatment. In addition, detection resolution of 1 for cesium particulates reaches the micrometer level which can be seen with the naked eye. Thus, 1 is effectively used for measuring the diffusion and accumulation process of cesium particulates.

The complex structure and fluorescence property of Cesium Green with Cs⁺ under UV irradiation (365 nm).