A naphthalene diimide-based MOF with mog net featuring photochromic behaviors and high stability

Abstract A novel photochromic metal-organic framework ([Zn(L) 0.5 (bpy)(H 2 O)]·3.5H 2 O, FJU-34 ) based on Zn(II), carboxylate-based naphthalene diimides derivatives (H 4 L) and 4,4′-bipyridine (bpy) has been prepared, which exhibits a unique doubly interpenetrated 3D open framework with a rare mog topological net. In addition, the excellent chemical stability and reversible photochromic performances have been observed in this compound.