Fig. 2
Mechanical properties and photobased properties of hydrogels. (A) The viscosity of hydrogels as a function of frequency. (B) Photographs of the injectability of DSeP(0.1). (C) The elastic modulus (G’) and viscous modulus (G’’) of DSeP(0.1) assessed by the strain sweep test from 1–1000% for 3 cycles. Photographs of the self-healing properties of the hydrogels: PEG-Se2 (transparent) and DSeP(0.1) (black). (D) Photographs of the adhesion of DSeP(0.1). (E) Adhesion strength of hydrogels. (F) Photographs of the on-demand degradability of DSeP(0.1) in the presence of 5% GSH and 3% H2O2. (G) Schema illustrating the photothermal mechanism of DSeP@PB. (H) Heating curves of the hydrogels. (I) Schema illustrating the heating and cooling curves of the hydrogels. (J) Release rate of PB nanozymes under different conditions (light on all times (red), light off all times (black), and light on and off alternatively (blue)). Data are presented as the means ± SDs (n = 3)