A Continuous π‑Stacked Starfish Array of Two-Dimensional Luminescent MOF for Detection of Nitro Explosives

A highly
luminescent two-dimensional metal–organic framework
(MOF) containing continuous π-stack cylindrical arrays in a
backbone has been designed and synthesized. Here, we demonstrate the
“supramolecular wire effect” on a MOF surface for fast
and reversible solid-state detection of both aliphatic and aromatic
nitro explosives via a fluorescence quenching mechanism. A possible
quenching mechanism by a supramolecular wire effect has been demonstrated
by structural analysis of host–guest π-stacked interactions
and guest sorption studies.