期刊
NATURE CHEMISTRY
卷 7, 期 4, 页码 342-348出版社
NATURE PUBLISHING GROUP
DOI: 10.1038/NCHEM.2201
关键词
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资金
- National Basic Research Program [2013CB834502]
- Natural Sciences Foundation of China [91027006, 21125417, 21434005]
- State Key Laboratory of Chemical Engineering
- National Sciences Foundation [1212799]
- Division Of Chemistry
- Direct For Mathematical & Physical Scien [1212799] Funding Source: National Science Foundation
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.
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