Unraveling the Role of Molecular Flexibility in Enhancing Pyridine Based Defect Passivation for Efficient and Stable Perovskite Solar Cells. - Lei, Yu; Yang, Guangyue; Shi, Na; Wang, Panyu; Li, Wei; Jiang, Jingfu; Xiao, Juan‐Ding; Jiang, Xiaoqing; Pang, Shuping (Angewandte Chemie, 2026)