Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
1321660 | Journal of Organometallic Chemistry | 2016 | 4 Pages |
•Tri-gold(I) triazolides are prepared in on-pot reactions from accessible gold precursors.•The new complexes emit visible light upon UV or visible excitation.•Long emission lifetimes in the microsecond range are observed at room temperature.
We report the synthesis and characterization of tri-gold(I) complexes of a phenyltriazolide ligand. This complex luminesces in solution at room temperature and 77 K with emission lifetimes of 4.72 ± 0.8 μs at 298 K and 529 ± 12 μs at 77 K. Density-functional theory calculations on model complexes indicate that the triazolyl ring and aryl substituents approach coplanarity, and that total charge transfer is attenuated in the triplet excited state.
Graphical abstractTriplet-state lumophores having long luminescent lifetimes are prepared in one-pot reactions that exemplify gold click chemistry. Emission spectra and time-dependent density-functional theory calculations indicate ligand-centered luminescence.Figure optionsDownload full-size imageDownload as PowerPoint slide