Ellipsometric studies of rod outer segment phospholipids at the nitrogen-water interface

Daniel Ducharme, Christian Salesse, Roger Leblanc

Research output: Contribution to journalArticle

39 Citations (Scopus)

Abstract

Ellipsometry is an optical method which uses the principle that the state of polarization of polarized light changes on reflection at an interface. We have constructed a null ellipsometer for the study of the optical properties of monomolecular films of biological interest at the nitrogen-water interface. With this apparatus we have reproduced the known ellipsometric properties of arachidic acid spread on acidic aqueous solution. Then, we have performed surface potential, surface pressure and ellipsometric measurements of PC (18:1) and rod outer segment phospholipids, i.e. PEros, PCros and PSros, at the nitrogen-water interface. Based on literature refractive indices data, results provide information about the thickness of a lipid film in the close-packed region. Pertinent information about molecular organization of the film is deduced from the close relationship observed between surface potential and ellipsometric isotherms. The importance of these results on the discal membrane structure and function is discussed.

Original languageEnglish
Pages (from-to)83-90
Number of pages8
JournalThin Solid Films
Volume132
Issue number1-4
DOIs
StatePublished - Jan 1 1985
Externally publishedYes

Fingerprint

Phospholipids
Surface potential
Nitrogen
rods
nitrogen
Membrane structures
Water
Ellipsometry
Light polarization
Lipids
water
Isotherms
Monolayers
Refractive index
membrane structures
ellipsometers
monomolecular films
Optical properties
Polarization
pressure measurement

ASJC Scopus subject areas

  • Surfaces, Coatings and Films
  • Condensed Matter Physics
  • Surfaces and Interfaces

Cite this

Ellipsometric studies of rod outer segment phospholipids at the nitrogen-water interface. / Ducharme, Daniel; Salesse, Christian; Leblanc, Roger.

In: Thin Solid Films, Vol. 132, No. 1-4, 01.01.1985, p. 83-90.

Research output: Contribution to journalArticle

Ducharme, Daniel ; Salesse, Christian ; Leblanc, Roger. / Ellipsometric studies of rod outer segment phospholipids at the nitrogen-water interface. In: Thin Solid Films. 1985 ; Vol. 132, No. 1-4. pp. 83-90.
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