Fig. 6. The photothermal effect of (A) MBA, (B) CuS NPs, (C) CuS@BSA, (D) CuS@BSA-MBA and (E) CuS@BSA-MBA-cRGD at different concentrations (0.5 mg mL⁻¹, 1.0 mg mL⁻¹, 2.0 mg mL⁻¹, 4.0 mg mL⁻¹) and irradiation time intervals (1 min to 6 min); quantitative comparison of the temperature changing of different samples (PBS, MBA, CuS NPs, CuS@BSA, CuS@BSA-MBA and CuS@BSA-MBA-cRGD) at concentrations of (F) 4.0 mg mL⁻¹ and (G) 200 μg mL⁻¹ in different laser irradiation times (1 to 6 min).