Unprecedented Water-controlled Rotator-stator Conversion of Supramolecular Rotors in Crystals

The rotational dynamics, dielectric response and phase transitions of a unique crystalline supramolecular rotor are controlled by the existence/absence of guest water molecules causing prominent effects on the supramolecular interactions. Such an unprecedented rotationally bistable rotor can promote the understanding of precise control of molecular rotors in crystals.