Phosgene is a highly toxic substance that has become a serious potential threat to public health safety. A colorimetric and ratiometric fluorescence probe 1 for phosgene has been developed based on an ESIPT process. Both the visible colorimetric change from colorless to yellow and the fluorescent color change from blue to green (under 365 nm hand-held UV lamp) can be easily observed by the naked eye. Probe 1 has a high sensitivity and selectivity for phosgene in solutions and the gas phase. The mechanism for sensing by 1 was investigated by using high-resolution mass spectrometry and 1H NMR and 13C NMR spectroscopies.
Bibliographical noteFunding Information:
This study is financially supported by the grants from the National Creative Research Initiative programs of the National Research Foundation of Korea (NRF) funded by the Korean government (MSIP) (No. 2017R1A2A1A05000752 and 2012R1A3A2048814). The Jeol JMS 700 high-resolution mass spectrometer was used for all the mass spectral data, which was supported from the Korea Basic Science Institute (Daegu).
© 2017 American Chemical Society.