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Abstract
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.