Displaying In Vivo “Assembly–Disassembly” Cascade with “Off–On–Off” Magnetic Resonance Imaging Signals in Tumor - Hai-Dong Xu; Xianbao Sun; Zheng Huang; Xiaotong Cheng; Xiancheng Fu; Jiayu Li; Ziwen Wei; Junchao Qian; Gaolin Liang (Journal of the American Chemical Society, 2025)