Solvent‐Free Supramolecular Polymerization for Feather‐Like Nanostructured Chiral Fluorescent Polyurethanes with Multimodal Chiroptical Stimuli Responsiveness. - Duan, Huimin; Li, Shuli; Wu, Xinlei; Deng, Jianping; Li, Jiawei; Qi, Dongming; Zhao, Biao (Advanced Science, 2025)