Molecular Diode‐Based Covalent Organic Frameworks: Imine Orientation‐Driven Acid‐Base Switching Photocatalytic H2 Production. - Liu, Tianyi; Lang, Yunjie; Sun, Ning; Fang, Xu; Rao, Jinhua; Xu, Yuchun; Li, Zhen; Deng, Weiqiao (Advanced Science, 2026)