Effect of bilayer phase transitions on vesicle structure and its influence on the kinetics of viologen reduction

Mikael Andersson, Leif Hammarström, Katarina Edwards

Research output: Contribution to journalArticle

81 Citations (Scopus)

Abstract

Vesicles were prepared from pure phosphatidylcholines (PC), phosphatidic acids (PA), or dioctadecyldimethylamonium bromide (DODAB). The aggregate structure was examined above and below the gel-to-liquid crystalline transition temperature (Tm) by means of cryo-transmission electron microscopy. The redox reaction between a membrane bound viologen and dithionite was studied in the different lipid systems. It was found that the presence of faceted vesicles or open bilayer fragments, below Tm, lead to double-exponential reduction kinetics.

Original languageEnglish
Pages (from-to)14531-14538
Number of pages8
JournalJournal of Physical Chemistry
Volume99
Issue number39
Publication statusPublished - 1995

Fingerprint

Viologens
Dithionite
Phosphatidic Acids
Redox reactions
Phosphatidylcholines
Bromides
Lipids
Superconducting transition temperature
lipids
bromides
Gels
Phase transitions
transition temperature
fragments
gels
Crystalline materials
membranes
Transmission electron microscopy
Membranes
transmission electron microscopy

ASJC Scopus subject areas

  • Physical and Theoretical Chemistry

Cite this

Effect of bilayer phase transitions on vesicle structure and its influence on the kinetics of viologen reduction. / Andersson, Mikael; Hammarström, Leif; Edwards, Katarina.

In: Journal of Physical Chemistry, Vol. 99, No. 39, 1995, p. 14531-14538.

Research output: Contribution to journalArticle

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