Photoluminescence of Doped Superatoms M@Au12 (M = Ru, Rh, Ir) Homoleptically Capped by (Ph2)PCH2P(Ph2): Efficient Room-Temperature Phosphorescence from Ru@Au12.
Shinjiro TakanoHaru HiraiTakuya NakashimaTakeshi IwasaTetsuya TaketsuguTatsuya TsukudaPublished in: Journal of the American Chemical Society (2021)
A series of doped gold superatoms M@Au12 (M = Ru, Rh, Ir) was synthesized by capping with the bidentate ligand (Ph2)PCH2P(Ph2). A single-crystal X-ray diffraction analysis showed that all the M@Au12 superatoms had icosahedral motifs with a significantly higher symmetry than that of the pure Au13 counterpart due to different coordination geometries. The Ru@Au12 superatom exhibited a room-temperature phosphorescence with the highest quantum yield of 0.37 in deaerated dichloromethane. Density functional theory calculations suggested that the efficient phosphorescence is ascribed to a rapid intersystem crossing due to the similarity between the singlet and triplet excited states in terms of structure and energy.
Keyphrases
- room temperature
- energy transfer
- sensitive detection
- quantum dots
- density functional theory
- reduced graphene oxide
- ionic liquid
- visible light
- molecular dynamics
- loop mediated isothermal amplification
- magnetic resonance imaging
- magnetic resonance
- computed tomography
- highly efficient
- electron microscopy
- metal organic framework