QUASI-LINEAR ELECTRONIC SPECTRA OF ``FLOPPY'' MOLECULES

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1974

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Ohio State University

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Dipheny1methylene impurity molecules in benzophenone crystals have broad ($500 cm^{-1}$ FWHH) emission and absorption spectra at temperatures greater than $20^{\circ} K$ and at lower temperatures a sharp ($10 cm^{-1}$ FWHH) quasi-line spectrum appears. The broad bands also become structured at low temperatures, These large ``phonon sidebands” are the result of poorly resolved low frequency internal mode structure of the guest molecules mixed with the phonon sidebands due to the gest-host electron-phonon interaction. Such spectra are likely to be characteristic of many molecules with Low frequency internal vibrations. These and other spectra are discussed in terms of current theories.

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Author Institution: Department of Chemistry, Harvard University

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http://hdl.handle.net/1811/16385

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Abstracts of OSU International Symposium on Molecular Spectroscopy 1970-1979