Synthesis of Rigid Stepladder Polymers via Scandium-Catalyzed Polyspiroannulation of Quinoline with Alkyne - Jingjing Shao; Lin Huang; Shao-Jie Lou; Aya Ohno; Yoichi M. A. Yamada; Masayoshi Nishiura; Tetsuro Murahashi; Zhaomin Hou (Journal of the American Chemical Society, 2025)