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The Intrinsic 3[dσ*pσ] Emission of Binuclear Gold(I) Complexes with Two Bridging Diphosphane Ligands Lies in the Near UV; Emissions in the Visible Region Are Due to Exciplexes |
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| Authors: | Wen-Fu Fu Kwok-Chu Chan Vincent M Miskowski Chi-Ming Che |
| Abstract: | A near-UV triplet emission from Au2(dcpm)2](ClO4)2 has been discovered. Studies on the spectroscopic properties of the complexes Au2(dcpm)2]Y2 (Y=ClO4−, PF6−, CF3SO3−, Au(CN)2]−, Cl−, and I−; dcpm=bis(dicyclohexylphosphanyl)methane) support the assignment of the high-energy emissions at 360–368 nm to the 3dσ*pσ] excited state, adducts of which exhibit exciplex emissions in the visible region with solvent or counterions (see schematic diagram). |
| Keywords: | Binuclear complexes Exciplexes Gold Luminescence UV/Vis spectroscopy |