Photomechanical-responsive materials were synthesized by Zhao and others through photodimerization (Figure ). Analogous to the aromatic-driven flipping of planarized conversion molecules, photomechanical molecules also exhibit subjective motion patterns induced by photoexcitation, encompassing jumping, bending, curling, crawling, and twisting. By suppressing its photoresponsive mechanical behavior, lighting up its fluorescence represents an innovative approach to AIE molecular design (Figure ). Although the photodimer suffers poor π conjugation due to the presence of the cyclobutane ring, the synergistic effect of efficient intramolecular through-space conjugation and restriction of intramolecular vibration stabilizes the molecular structure and allows radiation pathways to dissipate excited-state energy.