Properties of mixed chlorophyll a-glycolipid monolayers

Daniel Ducharme, Osamu Shibata, Gaétan Munger, Roger Leblanc

Research output: Contribution to journalArticle

2 Citations (Scopus)

Abstract

Surface pressure, ellipsometric and surface potential-area isotherms have been measured to investigate the properties of chlorophyll a-digalactosyldiacyglycerol (Chl a-DGDG) and Chl a-sulfoquinovosyldiacylglycerol (SQDG) monolayers at the nitrogen-water interface. The surface pressure-area isotherms of Chl a-DGDG exhibit a pronounced negative deviation with respect to ideality, whereas ellipsometric and surface potential isotherms of the mixed monolayers fall between those of the pure components. Hydrophilic interactions have been ruled out on the basis of the additivity law followed by the surface dipole moment of the mixed monolayers. The observed deviation exhibited by the π-A isotherms is interpreted in terms of an intermolecular cavity effect.

Original languageEnglish
Pages (from-to)135-140
Number of pages6
JournalThin Solid Films
Volume180
Issue number1-2
DOIs
StatePublished - Nov 21 1989
Externally publishedYes

Fingerprint

Glycolipids
chlorophylls
Chlorophyll
Isotherms
Monolayers
isotherms
Surface potential
deviation
Dipole moment
dipole moments
Nitrogen
nitrogen
cavities
chlorophyll a
Water
water
interactions

ASJC Scopus subject areas

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

Cite this

Properties of mixed chlorophyll a-glycolipid monolayers. / Ducharme, Daniel; Shibata, Osamu; Munger, Gaétan; Leblanc, Roger.

In: Thin Solid Films, Vol. 180, No. 1-2, 21.11.1989, p. 135-140.

Research output: Contribution to journalArticle

Ducharme, Daniel ; Shibata, Osamu ; Munger, Gaétan ; Leblanc, Roger. / Properties of mixed chlorophyll a-glycolipid monolayers. In: Thin Solid Films. 1989 ; Vol. 180, No. 1-2. pp. 135-140.
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