Fig. 4: Photoinduced enhanced enzyme-like catalytic properties of Au@CDs. | Light: Science & Applications

Fig. 4: Photoinduced enhanced enzyme-like catalytic properties of Au@CDs.

From: SERS monitoring of photoinduced-enhanced oxidative stress amplifier on Au@carbon dots for tumor catalytic therapy

Fig. 4

a UV–vis spectra of Au@CDs+ H2O2 +TMB systems in darkness or under 808 nm laser irradiation (react for 30 min), b SERS monitoring of Au@CDs+ H2O2 +TMB systems in darkness and c under 808 nm laser irradiation. d SERS intensities of peaks at 1611 cm–1 versus times. e EPR spectra of varied systems: (1) H2O2, (2) H2O2 + NIR, (3) H2O2 + Au@CDs, (4) H2O2 + Au@CDs + NIR. DMPO was used as spin adduct and NIR light is from 808 nm laser. f EPR spectra of varied systems: (1) GSH, (2) GSH + NIR, (3) GSH + Au@CDs, (4) GSH + Au@CDs + NIR in aqueous solution and (5) Au@CDs, (6) Au@CDs + NIR, (7) GSH + Au@CDs + NIR in methanol solution. DMPO was used as spin adduct and NIR light is from 808 nm laser. g Possible mechanism for the photoinduced enhanced POD-mimicking activities and h the photo-mediated GSHOx-mimicking activities under 808 nm laser irradiation.

Back to article page