1. Time-Resolved ElectronParamagnetic Resonance and Phosphorescence Studies of the Lowest ExcitedTriplet States of Rh(III) Corrole Complexes.
- Author
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Tanabe, Mana, Matsuoka, Hideto, Ohba, Yasunori, Yamauchi, Seigo, Sugisaki, Kenji, Toyota, Kazuo, Sato, Kazunobu, Takui, Takeji, Goldberg, Israel, Saltsman, Irena, and Gross, Zeev
- Subjects
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RHODIUM compounds , *METAL complexes , *PHOSPHORESCENCE , *ELECTRON paramagnetic resonance , *GALLIUM , *LIQUID crystals , *SPIN-orbit interactions , *QUANTUM chemistry , *GLASS - Abstract
The lowest excited triplet (T1) ÏÏ*states of gallium (Ga) and various rhodium (Rh) 5,10,15-trispentafluorophenylcorroles (Cors) were studied in the liquid crystal (LC) E-7 and inrigid glasses by time-resolved electron paramagnetic resonance (TR-EPR)spectroscopy. The triplet sublevel energies were experimentally determinedby the alignment of the molecules in the LC and by magnetophotoselectionin the glass. The sublevel scheme of GaCor was determined by calculatingthe zero field splitting (ZFS) parameters. Axial ligand effects andquantum chemical calculations were used for the sublevel assignmentof RhCors. The anisotropic EPR parameters were used to determine theimportant higher excited states and the magnitudes of their spinâorbitcoupling (SOC) contributions were evaluated. On the basis of theseresults and analyses, the EPR parameters and triplet lifetime werediscussed for each RhCor complex. [ABSTRACT FROM AUTHOR]
- Published
- 2012
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