Fig. 1

Characterization of PC₁₀A/DOX/HAuNS nanogels and PC₁₀A/DOX/HAuNS hydrogels. a TEM image and high resolution TEM image (insert) of HAuNS; b the different orientate lattice of HAuNS; TEM image of HAuNS/DOX nanoparticles (c) and PC₁₀A/DOX/HAuNS nanoparticles (d); e zeta potentials of HAuNS, DOX/HAuNS nanoparticles, and PC₁₀A/DOX/HAuNS nanoparticles; f UV–vis absorbance spectra of HAuNS solution, DOX solution, and DOX/HAuNS solution; g photographs of PC₁₀A hydrogel, PC₁₀A/DOX hydrogel, PC₁₀A/HAuNS hydrogel, and PC₁₀A/DOX/HAuNS hydrogel (PC₁₀A: 3% w/w, DOX: 0.8 mg mL⁻¹, HAuNS: 20 μg mL⁻¹); h SEM image and the high resolution SEM (insert) of the PC₁₀A/DOX/HAuNS hydrogel