1．原子・分子の動きの可視化
時間分解XAFSによる水溶液中の [RuII(bpy)3]2+の3MLCT状態の構造観測
2013 年 55 巻 1 号 p. 14-18
詳細
2013 年 55 巻 1 号 p. 14-18
Time-resolved X-ray absorption spectra was conducted to investigate transient structure change in the triplet metal-to-ligand charge transfer (3MLCT) state of ruthenium(II)-tris-2,2'-bipyridine ([RuII(bpy)3]2+). The results obtained by visible (400 nm) and UV (267 nm) excitation indicates that electrostatic interaction between the oxidized Ru atom and the reduced bipyridine ligand are the dominant factors affecting the Ru-N bond contraction. The EXAFS analysis of the 3MLCT state shows decrease of Ru-N distance and increase of Debye-Waller (DW) factor. An increase of the DW factor suggests that fast and localized structural distortions due to electron hopping exist in the 3MLCT excited state.
