Luminescence Control of Transition Metal Complexes Based on Zero-magnetic-field Splitting

2014 Fiscal Year Final Research Report

• Project/Area Number: 25620035
• Research Category: Grant-in-Aid for Challenging Exploratory Research
• Allocation Type: Multi-year Fund
• Research Field: Inorganic chemistry
• Research Institution: Hokkaido University
• Principal Investigator: KITAMURA Noboru 北海道大学, 理学(系)研究科(研究院), 教授 (50134838)
• Project Period (FY): 2013-04-01 – 2015-03-31
• Keywords: ゼロ磁場分裂 / 励起三重項状態 / 金属6核クラスター / 発光収率・寿命

Outline of Final Research Achievements

Temperature dependences of the emission spectra and lifetimes of a series of octahedral hexanuclear molybdenum clusters were studied and the zero-magnetic-field splitting (zfs) parameters of the clusters in the excited triplet state were evaluated. It was found that the clusters having larger zfs energies in the excited triplet states showed more intense and longer emission. The photophysical properties of a series of hexanuclear molybdenum complexes having terminal carboxylate ligands were also investigated and it was demonstrated that the photophysical properties of the clusters could be controlled by the acidity of the terminal carboxylate ligands. The present study demonstrataed that the luminescence properties of transition metal complexes could be controlled by the zfs energies in the excited triplet states.

Free Research Field

光化学