PROPERTIES OF CHLOROPH'YLL‐LECITHIN VESICLES: ULTRACENTRIFUGATION, ABSORBANCE, EMISSION AND PHOTOBLEACHING

H. Dijkmans, Roger Leblanc, F. Cogniaux, J. Aghion

Research output: Contribution to journalArticle

21 Citations (Scopus)

Abstract

Abstract— Egg lecithin vesicles (liposomes) containing up to one Chl a per 11 lecithin molecules were prepared without sonication. Their absorbance and emission properties indicate that Chl is dispersed in the lecithin, that the vesicles are dispersed in the medium and that there is a strong quenching of fluorescence. Their photobleaching and chemical bleaching show that there is a negligible amount of colloidal Chl present. In vesicles with a Chl:lecithin molar ratio higher than 0.05, there are probably some small aggregates of Chl a in the bilayer. The ultracentrifugation of such vesicles shows that their sedimentation constant increases, though not regularly, with their relative Chl content

Original languageEnglish (US)
Pages (from-to)367-372
Number of pages6
JournalPhotochemistry and Photobiology
Volume29
Issue number2
DOIs
StatePublished - 1979
Externally publishedYes

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Photobleaching
Lecithins
Ultracentrifugation
eggs
bleaching
quenching
fluorescence
molecules
Sonication
Bleaching
Sedimentation
Liposomes
Ovum
Quenching
Fluorescence
Molecules

ASJC Scopus subject areas

  • Medicine(all)
  • Biochemistry
  • Physical and Theoretical Chemistry

Cite this

PROPERTIES OF CHLOROPH'YLL‐LECITHIN VESICLES : ULTRACENTRIFUGATION, ABSORBANCE, EMISSION AND PHOTOBLEACHING. / Dijkmans, H.; Leblanc, Roger; Cogniaux, F.; Aghion, J.

In: Photochemistry and Photobiology, Vol. 29, No. 2, 1979, p. 367-372.

Research output: Contribution to journalArticle

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