Hierarchical Self-Assembly of a Pyrene-Based Discrete Organo­platinum(II) Double-Metalla­cycle with Triflate Anions via Hydrogen Bonding and Its Tunable Fluorescence Emission

Hierarchical
self-assembly of discrete organo­platinum­(II)
metalla­cycles has attracted considerable attention. However,
the exact assembly mechanism involving non-covalent interactions has
limited the formation and application of self-assembly due to the
dynamics of platinum metalla­cycles. Herein, we report the hierarchical
self-assembly of a pyrene-based discrete organo­platinum­(II)
double-metalla­cycle that takes advantage of hetero­ligation-coordination-driven
self-assembly and triflate anions’ hydrogen bonding, which
is extended into a 3-D supra­molecular framework by the hydrogen-bonding
interactions involving triflate anions. Furthermore, the assembled
system displays tunable fluorescence emission and enhanced solid emission.
The studies herein disclosed pave the way to prepare platinum­(II)
metalla­cycle-based supra­molecular functional materials.