During the initial exploration of the optical properties of small organic molecules, several molecules without rotor structures but possess emission enhancement after aggregation have been reported. Unlike the relatively rigid phenyl rings, certain conjugated cycloalkanes possess unique flexible 8-membered ring structures, such as cyclooctatetraene. Iyoda et al. synthesized a series of stripe shape conjugated systems with non-planar configurations and stripe-shape, multi-curved axes that feature two 8membered ring structures bridged by phenyl rings (Figure ). These molecules exist in a cis-trans conformational equilibrium in the dilute solution, and their emission intensities are remarkably enhanced by up to 710-fold in the crystalline state compared to the solution, demonstrating obvious crystal-induced emission enhancement.