Solvatomechanical Bending of Organic Charge Transfer Cocrystal

We report here a new ternary solvated
(perylene-TCNB)·2THF
cocrystal, which can transform into binary perylene-TCNB cocrystal
reversibly by successive desorption or absorption of THF solvent.
As a consequence, macroscopic mechanical bending would be realized
when repeated stimulation with THF solvent. The present results clearly
demonstrated that solvent induced mechanical bending is driven by
structural change at the molecular scale. Such solvatomechanical bending
behavior is clearly revealed for the first time.