Electron Spin Resonance Studies of Luminescent Transition Metal Complexes,
Abstract
Nonradiative transitions in transition metal complexes are discussed. Emission and absorption spectra presented for (d3)Cr(+3) and (d6)Rh(+3), Ir(+3) and Ru(+2) complexes permit classification of the emission as localized orbital (d-d) or delocalized orbital. Quantum, yield, lifetime data and high resolution spectra for localized orbital complexes indicate that phosphorescence is the dominant type emission. Delocalized orbital emitters (d6 here) behave as Pi electron hydrocarbon emitters. The general Robinson-Frosch theory of nonradiative transitions that considers the nonradiative rate constant to be a product of an electronic factor and a vibrational factor can be used as the delocalized orbital emitters and are dominated by the heavy atom spin orbital coupling. The localized orbital emitters require addition of the Jortner-Freed model of weak and strong coupled surfaces to rationalize the vibrational factors.
Document Details
- Document Type
- Technical Report
- Publication Date
- Oct 22, 1973
- Accession Number
- AD0770535
Entities
People
- M. Keith Dearmond
Organizations
- North Carolina State University