Experimental evidence for an original two-dimensional phase structure: An antiparallel semifluorinated monolayer at the air-water interface

Autor:	Olivier Abillon, A. El Abed, M. C. Fauré, E. Pouzet
Rok vydání:	2002
Předmět:	symbols.namesake Materials science Chemical physics Bilayer Phase (matter) Monolayer symbols Molecule Nanotechnology van der Waals force Electrostatics Surface pressure Antiparallel (biochemistry)
Zdroj:	Physical Review E. 65
ISSN:	1095-3787 1063-651X
DOI:	10.1103/physreve.65.051603
Popis:	We show the spontaneous formation of an antiparallel monolayer of diblock semifluorinated n-alkane molecules spread at the air-water interface. We used simultaneous measurements of surface pressure and surface potential versus molecular area and performed grazing x-ray reflectivity experiments to characterize the studied monolayer, which is obtained at almost zero surface pressure and precedes the formation of a bilayer at higher surface pressure. Its thickness, equal to 2.7 nm, was found to be independent of the molecular area. This behavior may be explained by van der Waals and electrostatic interactions.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_dedup___::40bba2a12f3f91a904db123575a0a905 https://doi.org/10.1103/physreve.65.051603 Zobrazit plný text záznamu