2.5 Photothermal Effects of RCNs and DOX@RCNs
Temperature changes were recorded during continuous NIR irradiation (808nm, 2.0w) to the solutions of RCNs at different concentrations (0, 25, 50, and 100μg/ml) for 600s. The temperature was recorded every 25s using a thermal imaging camera. To test the photothermal stability of the obtained RCNs, six cycles of heating and cooling for the solution were recorded. The photothermal conversion efficiency (η) of the RCNs solution was calculated according to the previous literature[26]. For the DOX@RCNs composites, temperature rise curve were firstly recorded during NIR irradiation (808nm, 2.5w) to the solutions of RCNs at 50μg/ml for 600s, then the temperature reduction curve was continued without NIR irradiation for another 700s.