Fig. 3
In vitro GSH depletion and ·OH generation enabled by PEG/Cu-BDC. a UV–Vis absorption spectra of DTNB solution containing different proportions of GSH and PEG/Cu-BDC. b, c UV–Vis absorption spectra of DTNB solution containing GSH and PEG/Cu-BDC at (b) pH 6.5 and (c) pH 7.4. d The comparison of GSH consumption rate under pH 6.5 and 7.4, respectively. e UV–Vis absorption spectra of oxidized TMB solution after various treatments. f, g UV–Vis absorption spectra of oxidized TMB solution containing the proportions of PEG/Cu-BDC to H2O2 of (f) 1: 1 and (g) 1:2. h The ·OH generation rate in different proportions of PEG/Cu-BDC to H2O2. i EPR spectra of DMPO containing different proportions of PEG/Cu-BDC to H2O2