Spectroscopic Study of Some Mesogenic Cyanophenyls in Condensate Films and Inert Matrices

In present work the molecular aggregation and interaction with metallic silver of liquid crystalline 4-pentyl-4′-cyanobiphenyl (5CB),4-pentyl-4′-cyanophenyl pyridine (5Py). 4-pentyl-4′-cyanophenylcyclohexane (5CH), 4-octyl-4′-cyanobiphenyl (8CB), 4-octy-loxy-4′-cyanobiphenyl (8OCB) in molecular cond...

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Bibliographic Details
Published in:Molecular crystals and liquid crystals science and technology. Section A, Molecular crystals and liquid crystals Molecular crystals and liquid crystals, 1999-08, Vol.332 (1), p.355-362
Main Authors: Shabatina, Tatyana I., Vovk, Eugenia V., Khasanova, Tatyana V., Bogomolov, Andrew Yu, Sergeev, Gleb B.
Format: Article
Language:English
Subjects:
condensate films
IR-spectroscopy
liquid crystals
molecular aggregation
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Summary:In present work the molecular aggregation and interaction with metallic silver of liquid crystalline 4-pentyl-4′-cyanobiphenyl (5CB),4-pentyl-4′-cyanophenyl pyridine (5Py). 4-pentyl-4′-cyanophenylcyclohexane (5CH), 4-octyl-4′-cyanobiphenyl (8CB), 4-octy-loxy-4′-cyanobiphenyl (8OCB) in molecular condensate films and inert matrices has been studied by low temperature reflection and transmission vibrational spectroscopy in a wide temperature range 80-330 K. The red shift of CN-stretching vibrations band was found to be due to molecular aggregates formation. The factors effecting on their thermodynamic stability are considered.
ISSN:1058-725X
DOI:10.1080/10587259908023779