Reversible regulating of crystal structures based on isomerization of phenylhydrazones†
Abstract
Reversible crystal transformation for phenylhydrazones 1 between the orthorhombic microporous 1-E crystal and monoclinic herringbone 1-Z crystal induced by light and heating has been demonstrated. Other than the inherent single-molecular photoreactivity, the weak intermolecular interactions and loose stacking of porous 1-E crystal favor the efficient solid-state photoisomerization.