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

Mikael Andersson; Leif Hammarström; Katarina Edwards

doi:10.1021/j100039a047

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

Mikael Andersson, Leif Hammarström, Katarina Edwards

Uppsala University

Research output: Contribution to journal › Article › peer-review

90 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 (T_m) 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 T_m, lead to double-exponential reduction kinetics.

Original language	English
Pages (from-to)	14531-14538
Number of pages	8
Journal	Journal of physical chemistry
Volume	99
Issue number	39
DOIs	https://doi.org/10.1021/j100039a047
Publication status	Published - Jan 1 1995

ASJC Scopus subject areas

Engineering(all)
Physical and Theoretical Chemistry

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