Light-Driven
Molecular Motors: Imines as Four-Step
or Two-Step Unidirectional Rotors
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Abstract
Chiral <i>N</i>-alkyl imines undergo unidirectional rotation
induced by light and heat, thus providing a new class of molecular
motors. Depending on the conformational flexibility of the stator
part (the carbonyl residue) and the nitrogen inversion barrier of
the rotor part (the amine residue) in the molecule, the operation
mode of the motor can be controlled as either a four- or a two-step
cycling motion of the rotor part