Abstract
Electrons in fluids are quite remarkable species, whose fleeting chemical existence is nevertheless far longer than the vibrations, rotations and configurational relaxations of the molecular host environment [1]. Residing in a discrete molecular cluster in the liquid, the localized electron becomes a microscopic probe of the dynamical liquid structure. This is a novel perspective on the role of electrons in fluids, one which also introduces non-linear optical phenomena into the molecular dynamics of liquids in a natural way. In this paper we present some of the experimental evidence for our opening remarks and briefly outline the implications for future studies. Thus picosecond chromodynamics refers to the coupled time and frequency evolution of the excess electron states, by which we (a) characterize the response of a polar fluid to electron injection through the dynamics of electron trapping, and (b) observe the relaxation of the charge-dipole interaction following photoejection of the electron from its molecular cluster. Before describing the results from these picosecond spectroscopy experiments, it will be instructive to review the framework within which the data can be interpreted.
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Kenney-Wallace, G.A. (1978). Picosecond Chromodynamics of Electrons in Fluids. In: Zewail, A.H. (eds) Advances in Laser Chemistry. Springer Series in Chemical Physics, vol 3. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-642-67054-1_17
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DOI: https://doi.org/10.1007/978-3-642-67054-1_17
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