fig11

Figure 11. (A) Schematic illustrations of the 3D hierarchical microstructure of the gelated PANi hydrogel where phytic acid plays a role as a dopant and a crosslinker. The three-level hierarchical porosity of angstrom, nanometer, and micron size pores is highlighted by red arrows. (B) A photograph of the PANi hydrogel inside a glass vial^[123]. PANi: Polyaniline.