Abstract
When an electron is injected into a polar solvent such as water or alcohols, the electron is solvated and forms the so-called solvated electron. This solvated electron is considered the most basic anionic species in solutions and it has been extensively studied by variety of experimental and theoretical methods. The picosecond time-resolved Raman scattering was measured from water under the resonance condition with the s-p transition of the solvated electron, and it was found that strong transient Raman bands appeared in accordance with the generation of the solvated electron. It is concluded that the observed transient Raman scattering is due to the water molecules that directly interact with the electron in the first solvation shell. Similar results are also obtained by a nanosecond Raman study. This finding implies that it is now possible to study the solvated electron by using vibrational spectroscopy. This chapter describes new information about the ultrafast dynamics of the solvated electron in water, which is obtained by time-resolved resonance Raman spectroscopy.
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