Abstract
The realization of real-time thermal feedback for monitoring photothermal therapy (PTT) under near-infrared (NIR) light irradiation is of great interest and challenge for antitumor therapy. Herein, by assembling highly efficient photothermal conversion gold nanorods and a temperature-responsive probe ((E)-4-(4-(diethylamino)styryl)-1-methylpyridin-1-ium, PyS) within MOF-199, an intelligent nanoplatform (AMPP) was fabricated for simultaneous chemodynamic therapy and NIR light-induced temperature-feedback PTT. The fluorescence intensity and temperature of the PyS probe are linearly related due to the restriction of the rotation of the characteristic monomethine bridge. Moreover, the copper ions resulting from the degradation of MOF-199 in an acidic microenvironment can convert H<sub>2</sub>O<sub>2</sub> into •OH, resulting in tumor ablation through a Fenton-like reaction, and this process can be accelerated by increasing the temperature. This study establishes a feasible platform for fabricating highly sensitive temperature sensors for efficient temperature-feedback PTT.
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