Submillimetre wave spectroscopy of 4-n-alkyl-4′-cyano biphenyl liquid crystals

Submillimetre wave spectroscopy of 4-n-alkyl-4′-cyano biphenyl liquid crystals

The absorption coefficient of the 4-n-alkyl-4′-cyano biphenyls has been studied in the submillimetre wave range 50-220 cm −1 . Molecular processes which give rise to superimposed but distinct absorption bands are reported. These processes have been analysed using a multi-oscillator model for the obs...

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Veröffentlicht in:Liquid crystals 1989-01, Vol.4 (5), p.529-542
Hauptverfasser: Murthy, U. M. S., Vij, J. K.
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description The absorption coefficient of the 4-n-alkyl-4′-cyano biphenyls has been studied in the submillimetre wave range 50-220 cm −1 . Molecular processes which give rise to superimposed but distinct absorption bands are reported. These processes have been analysed using a multi-oscillator model for the observed absorption and are assigned to the Poley absorption as well as to intermolecular and intramolecular mechanisms. Spectra at temperatures in the range 20-70°C and of solutions in cyclohexane support the proposed assignments.
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title Submillimetre wave spectroscopy of 4-n-alkyl-4′-cyano biphenyl liquid crystals
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