Stable Ultrabroad‐Absorbing Radical Achieves Efficient NIR‐II Photothermal Conversion via Facile Synthesis. - Zhang, Haozhe; Yang, Yuhang; Huang, Jiaxing; Chen, Luotai; Cui, Yongyan; Lu, Zhiyuan; Shen, Shishi; Liu, Zixi; Song, Hongwei; Kuang, Zhuoran; Dang, Qianxi; Li, Yuan (Advanced Science, 2025)