激發態鑭系化合物之光譜研究

Project Details

Description

This proposal aims to investigate the spectroscopy and energy relaxation kinetics of highly excited electronic states in the compounds containing trivalent lanthanides. We previously observed the Tb(III)→Eu(III) energy transfer in the coordination polymers and this mechanism is a one-directional upper state energy migration, which is dependent of the contact probability, Tb(Il)-Tb(III) energy hopping, and interaction distance. The manuscripts are in preparation for publication. In addition to the energy transfer between trivalent lanthanides, we found the highly excited states in the emission spectra of compounds containing trivalent lanthanides and the electronic energy relaxation is highly correlated with molecular structures such as the CO vibration of ligands. An article on this subject has been published on J. Chin. Chem. Soc. Recently, the effects of crystalline waters on the electronic energy relaxation of highly excited states were discovered, and are dramatically different for different coordination centers. For example, despite their similar energy levels and chemical properties, the electronic energy relaxation mechanisms of Eu(II) and Sm(IIl) are profoundly different. We will investigate the spectroscopy, the electronic energy relaxation rates and mechanisms of these excited states.
StatusFinished
Effective start/end date1/08/2231/07/23

Keywords

  • trivalent lanthanides
  • spectroscopy
  • kinetics
  • excited electronic state
  • energy relaxation
  • energy transfer

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