Open AccessCCS ChemistryRESEARCH ARTICLE1 Apr 2021Positive/Negative Phototropism: Controllable Molecular Actuators with Different Bending Behavior Haoran Wang, Jiapeng Liu, Kaiqi Ye, Qiyao Li, Jianyu Zhang, Hao Xing, Peifa Wei, Jingbo Sun, Francesco Ciucci, Jacky W. Y. Lam, Ran Lu and Ben Zhong Tang Wang State Key Laboratory of Supramolecular Structure Materials, College Chemistry, Jilin Univer...