*2.11. Wound Healing Assays*

The mice whose wounds were infected with *S. aureus* were randomly divided into five groups (*n* = 5–7 mice) as follows: blank group, MoS2 group, MoS2-Van-FITC@CS group, NIR MoS2 group, and NIR MoS2-Van-FITC@CS group. The wound site of the blank group was treated with 100 μL of PBS, that of the MoS2 group was treated with 100 μL of MoS2 each day, that of the MoS2-Van-FITC@CS group was treated with 100 μL of MoS2-Van-FITC@CS hydrogel each day, that of the NIR MoS2 group was treated with MoS2, followed by irradiation at 1.5 W/cm<sup>2</sup> for 5 min, and that of the NIR MoS2-Van-FITC@CS group was treated with MoS2-Van-FITC@CS, followed by irradiation at 1.5 W/cm<sup>2</sup> for 5 min. The mice were photographed daily for eight consecutive days. The mice were euthanized, and their epidermises were harvested for hematoxylin–eosin staining [43].

#### *2.12. Safety Evaluation of MoS2-Van-FITC@CS*

To examine the toxic effects of NIR and MoS2-Van-FITC@CS on the heart, liver, spleen, lungs, and kidneys of mice, the wounded mice were divided into four groups as follows: control group, NIR irradiation group, MoS2-Van-FITC@CS group, and MoS2-Van-FITC@CS + NIR group. The irradiation power density was 1.5 W/cm2, the wavelength was 808 nm, and the irradiation time was 6 min. The mice were treated until their wounds healed, and they were euthanized 30 days after the end of treatment. Their organs were collected, and the cross-sections were stained with hematoxylin–eosin [44].

## **3. Results and Discussion**
