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. 2024 Oct 30;96(45):18132–18140. doi: 10.1021/acs.analchem.4c04157

Figure 1.

Figure 1

(a) Design, synthesis, and sensing mechanism of the probe ER-GSH. Reagents and conditions: (i) N-(2-aminoethyl)-4-methylbenzenesulfonamide, ethanol, 80 °C, 8 h. (ii) Sodium thiomethoxide, K2CO3, anhydrous DMF, 90 °C, 12 h. (iii) m-CPBA, anhydrous dichloromethane, 0 °C to room temperature, 2 h. (b) Optimized DFT molecular orbital plots (LUMO and HOMO) of ER-GSH (left) and ER-f-GSH (right) (c) absorption and (d) emission spectra of the probe ER-GSH before and after reaction with GSH. (e) Two-photon activity cross section of the probe ER-GSH before and after reaction with GSH.