Molecular electronic spectral broadening in liquids and glasses

Article Abstract:

Time scales, magnitudes, and underlying mechanisms that broaden electronic spectra of molecules in glasses and liquid solutions have been set out with emphasis on experimental results. The results are from single-molecule, photon echo, hole-burning and resonance fluorescence and Raman investigation. Time scale has an influence on measurement in distinguishing between inhomogeneous broadening and homogeneous broadening (electronic dephasing) and coupling of solvent phonons to the electronic transition of the solute has a role.

United States, Research, Observations, Glass, Liquids, Spectrum analysis, Spectra, Spectroscopy, Chemistry, Physical and theoretical, Physical chemistry, Chemical reactions, Solvation, Phonons, Scattering (Physics), Fluorescence spectroscopy

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Resonance Raman intensities and charge-transfer reorganization energies

Article Abstract:

Resonance Raman intensity analysis gives an in situ evaluation of geometric and reorganization changes in complex molecules during electron transfer processes. The Raman spectra intensities on resonance with charge-transfer transitions can indicate all the mode-specific reorganization energies. Resonance Raman intensity is used to analyze metal-to-ligand, ligand-to-metal, ligand-to-ligand, intervalence and interfacial charge transfers, and noncovalent donor-acceptor complexes.

Charge transfer, Complex compounds

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The coordination chemistry of the CF unit in fluorocarbons

Article Abstract:

Carbon-fluorine (CF) units can be suitable donors in interactions with metal ions, such as lithium and other alkali and alkaline earth metals. Coordination of CF-metal chemistry requires that ligands contain an abundance of fluorine atoms and few other donors, as interactions will favor oxygen when available. Electronegativity of the ligand and preorganization of donor atoms improves interaction with metallic cations.

Reactivity (Chemistry), Electron donor-acceptor complexes, Fluorocarbons, Metal ions

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