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.