1986
DOI: 10.1007/bf01410307
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Electrostatic interactions in phospholipid membranes I: Influence of monovalent ions

Abstract: Electrostatic interactions in monolayers and vesicles of acidic phospholipids are studied by thermodynamical and optical techniques in conjunction with numerical calculations. A nonmonotonic ionic strength dependence with an extremum at 0.1 M (NaC1) is observed for the phase transition temperature of vesicles as well as for the surface pressure of monolayers at low molecular density. This finding is in accordance with the calculations predicting the dominance of charge screening by monovalent counterions only … Show more

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Cited by 161 publications
(159 citation statements)
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“…Among others they include electric surface potential (10)(11)(12) and viscoelastic measurements (13), nonlinear optics (14), epifluorescence microscopy (15)(16)(17)(18), and x-ray diffraction (19,20) from a synchrotron source. The epifluorescence microscopy, for example, allows a direct visualization of monolayers on length scales of micrometers.…”
mentioning
confidence: 99%
“…Among others they include electric surface potential (10)(11)(12) and viscoelastic measurements (13), nonlinear optics (14), epifluorescence microscopy (15)(16)(17)(18), and x-ray diffraction (19,20) from a synchrotron source. The epifluorescence microscopy, for example, allows a direct visualization of monolayers on length scales of micrometers.…”
mentioning
confidence: 99%
“…Com relação ao modelo do capacitor permeável, suas deficiências estão na aproximação de Debye-Hueckel, mais precisamente na ausência de tamanho dos íons e solvente discreto e não no tratamento das correlações de longo alcance (Blum et al, 1995;Sheu et al, 1985;Blum & Henderson, 1981;Henderson & Blum, 1978;Stell & Sun, 1975 Andelman et al, 1987;Helm et al, 1986;Trauble et al, 1976).…”
Section: Resultsunclassified
“…No caso de monocamadas carregadas, equações de estado têm sido derivadas, usando-se a teoria de Gouy-Chapman (supondo carga superficial uniformemente distribuída) (Helm et al, 1986;Trauble et al, 1976) ou o formalismo dos domínios (Fainerman et al, 1996;Ruckenstein & Li, 1995). A equação de estado baseada na teoria de Gouy-Chapman não considera a existência de domínios na superfície e, em princípio, só pode ser usada nas fases líquido-condensada e sólida (quando a aproximação da densidade de carga uniforme é válida).…”
Section: Resultsunclassified
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