Flexible High-Aspect-Ratio COF Nanofibers: Defect-Engineered Synthesis, Superelastic Aerogels, and Uranium Extraction Applications

) and adsorption rate (89.9%), and a 2.48-fold improvement in selectivity (U/V = 2.31). This study provides a direct strategy for the development of next-generation COF materials with outstanding functionality and structural robustness.