Fig. 10
From: Roles of MXenes in biomedical applications: recent developments and prospects
Reproduced with permission from Ref. [116], © American Chemical Society 2017
Contrast-enhanced pH-responsive MRI of MnOx/Ti3C2Tx-SP nanosheets in vitro and in vivo. a Schematic diagram of the disintegration of the MnOx fraction under weakly acidic conditions. b In vitro T1-weighted magnetic resonance imaging of MnOx/Ti3C2Tx-SP nanosheets after 3Â h immersion in buffered solutions with different pH values. c MnOx/Ti3C2Tx-SP nanosheets soaked in buffer solutions of different pH values for 3Â h, 1/T1 vs. Mn concentration. T1-weighted imaging d and detection of the corresponding MRI signal intensity e after intravenous injection of MnOx/Ti3C2Tx-SP composite nanosheets to mice at different time points were performed.