| 초록 |
Hydrogen sulfide (H2S) has been identified as a toxic pollutant as well as strong nucleophile for many years. Here, we report the design and synthesis of a novel colorimetric and fluorescence probe for H2S detection utilizing organo-fluorine functional group to control the reaction rate. We introduced the probes including different electron density of carbon by changing the fluorine position and the number of fluorine. The probe showed high selectivity and sensitivity for H2S, measuring UV-Vis, PL spectrum in solution state. New n-π* transition was observed, based on lone pair electron of sulfur in UV-Vis spectrum. We performed MALDI-TOF mass to confirm the covalent bonding between probe and -SH part. 19F NMR, FT-IR were tested to understand where reaction position was. We also measure DFT calculation for determining the sensing mechanism of probe-SH adduct. We suggest that novel colorimetric and fluorescent probe for H2S detection can be introduced to tons of types of organic dyes. |
