title: Highly emissive platinum(II) metallacages.
abstract: Light-emitting materials, especially those with tunable wavelengths, attract considerable attention for applications in optoelectronic devices, fluorescent probes, sensors and so on. Many species evaluated for these purposes either emit as a dilute solution or on aggregation, with the former often self-quenching at high concentrations, and the latter falling dark when aggregation is disrupted. Here we preserve emissive behaviour at both low- and high-concentration regimes for two discrete supramolecular coordination complexes (SCCs). These tetragonal prismatic SCCs are self-assembled on mixing a metal acceptor, Pt(PEt3)2(OSO2CF3)2, with two organic donors, a pyridyl-decorated tetraphenylethylene and one of two benzene dicarboxylate species. The rigid organization of these fluorescence-active ligands imparts an emissive behaviour to dilute solutions of the resulting assemblies. Furthermore, on aggregation the prisms exhibit variable-wavelength visible-light emission, including rare white-light emission in tetrahydrofuran. The favourable photophysical properties and solvent-dependent aggregation behaviour provide a means to tune emission wavelengths.
authors: Center for Chemistry of High-Performance &Novel Materials, State Key Laboratory of Chemical Engineering, Department of Chemistry, Zhejiang University, Hangzhou 310027, China.
authors: Xuzhou
authors: 0000000261145743
authors: X
authors: Yan
authors: Department of Chemistry, University at Buffalo, 359 Natural Sciences Complex, Buffalo, New York 14260, USA.
authors: Timothy R
authors: TR
authors: Cook
authors: Center for Chemistry of High-Performance &Novel Materials, State Key Laboratory of Chemical Engineering, Department of Chemistry, Zhejiang University, Hangzhou 310027, China.
authors: Pi
authors: P
authors: Wang
authors: Center for Chemistry of High-Performance &Novel Materials, State Key Laboratory of Chemical Engineering, Department of Chemistry, Zhejiang University, Hangzhou 310027, China.
authors: Feihe
authors: F
authors: Huang
authors: Department of Chemistry, University of Utah, 315 South 1400 East, Room 2020, Salt Lake City, Utah 84112, USA.
authors: Peter J
authors: PJ
authors: Stang