Reorientation of liquid-crystal (LC) molecules in mixed surfactant/LC Langmuir films

Autor:	M. Barmentlo, Q.H.F. Vrehen
Rok vydání:	1993
Předmět:	chemistry.chemical_classification Biphenyl Langmuir Stereochemistry General Physics and Astronomy Pentadecanoic acid Matrix (chemical analysis) chemistry.chemical_compound Crystallography Pulmonary surfactant chemistry Liquid crystal Molecule Physical and Theoretical Chemistry Alkyl
Zdroj:	Chemical Physics Letters. 209:347-351
ISSN:	0009-2614
DOI:	10.1016/0009-2614(93)80028-n
Popis:	The molecular orientation of 4- n -octyl-4′ -cyanobiphenyl (8CB) liquid crystal molecules in a pentadecanoic acid (PDA) surfactant matrix at the air—water interface is studied with the use of optical second-harmonic generation. The results indicate a significant reorientation of the biphenyl core upon compression of the films, due to interactions between the PDA and 8CB molecules. The final molecular orientation is consistent with that of a fully stretched perpendicularly aligned alkyl chain of the LC molecules.
Databáze:	OpenAIRE
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