Direct evidence for the formation of a monolayer from a bilayer. An ellipsometric study at the nitrogen-water interface

C. Salesse, D. Ducharme, R. M. Leblanc

Research output: Contribution to journalArticle

15 Scopus citations

Abstract

Direct evidence for the formation of a monolayer from a bilayer was measured by ellipsometry after spreading unilamellar vesicles of dioleoyl phosphatidylcholine (DOPC) at the nitrogen-water interface. The ellipsometric isotherms of DOPC vesicles and DOPC spread from an organic solvent were compared and found similar. From the observed ellipsometric angle (delta delta) in the plateau region (-1.04 degrees) and literature data for refractive indices of an anisotropic film similar to DOPC, we have calculated a thickness of 20 +/- 1 A. These results strongly suggest that, similarly to DOPC spread from an organic solvent, DOPC vesicles form a monolayer when spread at the nitrogen-water interface.

Original languageEnglish (US)
Pages (from-to)351-352
Number of pages2
JournalBiophysical journal
Volume52
Issue number2
DOIs
StatePublished - 1987

ASJC Scopus subject areas

  • Biophysics

Fingerprint Dive into the research topics of 'Direct evidence for the formation of a monolayer from a bilayer. An ellipsometric study at the nitrogen-water interface'. Together they form a unique fingerprint.

  • Cite this