Transition metal-lanthanides, energy transfer

Energy Transfer in Transition Metal-Lanthanide Systems. 264... 

Haibing Xu received his M.Sc. degree in chemistry from Fuzhou University in 2003, and Ph.D. from Fujian Institute of Research on the Structure of Matter in 2006. He is currently an Associate Researcher at the Fujian Institute of Research on the Structure of Matter, working on the design and construction of transition metal and lanthanide heteronuclear complexes for developing sensitized near-infrared luminescence by d -> f energy transfer. 

A. Electron-Phonon Interaction Parameterization Scheme. In observing the fluorescence decay rate from a given J-manifold, it is generally found that the decay rate is independent of both the crystal-field level used to excite the system and the level used to monitor the fluorescence decay. This observation indicates that the crystal-field levels within a manifold attain thermal equilibrium within a time short compared to the fluorescence decay time. To obtain this equilibrium, the electronic states must interact with the host lattice which induces transitions between the various crystal-field levels. The interaction responsible for such transitions is the electron-phonon interaction. This interaction produces phonon-induced electric-dipole transitions, phonon side-band structure, and temperature-dependent line widths and fluorescence decay rates. It is also responsible for non-resonant, or more specifically, phonon-assisted energy transfer between both similar and different ions. Studies of these and other dynamic processes have been the focus of most of the spectroscopic studies of the transition metal and lanthanide ions over the past decade. An introduction to the lanthanide work is given by Hiifner (39). 

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