Hierarchical Self-Assembly of a Pyrene-Based Discrete Organoplatinum(II) Double-Metallacycle with Triflate Anions via Hydrogen Bonding and Its Tunable Fluorescence Emission
Zaiwen Yang, Yiliang Wang, Xiangrong Liu, Ryan T. VanderLinden, Ruidong Ni, Xiaopeng Li, Peter J. Stang
Abstract
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.