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Spectroscopy of Molecular Excitons (Paperback, Softcover reprint of the original 1st ed. 1985)
Loot Price: R1,557
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Spectroscopy of Molecular Excitons (Paperback, Softcover reprint of the original 1st ed. 1985)
Series: Springer Series in Chemical Physics, 16
Expected to ship within 10 - 15 working days
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Low-temperature spectroscopy of organic molecular crystals came
into being in the late 20s, just when quantum physics of solids as
a whole began to de velop vigorously. Already in the early works,
two experimental facts of prime importance were discovered: the
presence of a multitude of narrow bands in the low-temperature
spectrum of a crystal, and a close relationship between the
spectrum of the crystal and that of the constituent molecules.
These findings immediately preceded the celebrated paper of Frenkel
in which he went beyond the framework of Bloch's scheme and
advanced the exciton concept. Subsequent investigations showed that
the most interesting features of the spectra of molecular crystals
are associated with excitons, and then the spectroscopy of
molecular excitons began to form gradually on the basis of the
spectroscopy of organic crystals. The molecular exciton became
synonymous to the Frenkel exciton in a molecular crystal. In view
of the difficulties involved in the analysis of rich spectra con
taining many tens of bands, the spectroscopy of molecular crystals
had long been connected most closely with the spectroscopy of
molecules. It had deve loped independently, to a large extent, from
the other branches of solid state physics. This was also emphasized
by the difference in experimental techniques, the specific
properties of the objects, etc. As a result, there was some lag in
ideas and concepts."
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