Adsorption and ion-pairing interactions of phospholipids in the system of two immiscible electrolyte solutions - Part III

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216208%3A11310%2F08%3A13145" target="_blank" >RIV/00216208:11310/08:13145 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/61388955:_____/08:00309481

Výsledek na webu

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DOI - Digital Object Identifier

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Jazyk výsledku

angličtina

Název v původním jazyce

Adsorption and ion-pairing interactions of phospholipids in the system of two immiscible electrolyte solutions - Part III

Popis výsledku v původním jazyce

The behaviour Of L-alpha-lecithin (DPPC) was studied at the water/1,2-dichloroethane interface within a range of interfacial potential differences below the zero-charge potential difference, using surface tension and voltammetric measurements. The general five-step model, established in Parts I and II of this series, has been confirmed. The surface pressure of DPPC adsorbed at the interface exhibits a maximum in acidic media close to the zero-charge potential difference, E-pzc, of the base electrolytes.It is demonstrated that, in contrast to the potentials higher than E-pzc, where the change in the surface pressure is due to desorption of the protonated form of DPPC, the observed change in the surface pressure at interfacial potential differences below E-pzc can be explained by alterations in the concentrations of the adsorbed zwitter-ionic and protonated forms of DPPC governed by the general acid/base equilibrium.

Název v anglickém jazyce

Adsorption and ion-pairing interactions of phospholipids in the system of two immiscible electrolyte solutions - Part III

Popis výsledku anglicky

The behaviour Of L-alpha-lecithin (DPPC) was studied at the water/1,2-dichloroethane interface within a range of interfacial potential differences below the zero-charge potential difference, using surface tension and voltammetric measurements. The general five-step model, established in Parts I and II of this series, has been confirmed. The surface pressure of DPPC adsorbed at the interface exhibits a maximum in acidic media close to the zero-charge potential difference, E-pzc, of the base electrolytes.It is demonstrated that, in contrast to the potentials higher than E-pzc, where the change in the surface pressure is due to desorption of the protonated form of DPPC, the observed change in the surface pressure at interfacial potential differences below E-pzc can be explained by alterations in the concentrations of the adsorbed zwitter-ionic and protonated forms of DPPC governed by the general acid/base equilibrium.

Druh

J_x - Nezařazeno - Článek v odborném periodiku (Jimp, Jsc a Jost)

CEP obor

CF - Fyzikální chemie a teoretická chemie

OECD FORD obor

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Projekt

<a href="/cs/project/LC06063" target="_blank" >LC06063: Fluorescenční mikroskopie v biologickém a lékařském výzkumu</a><br>

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Rok uplatnění

2008

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

Journal of electroanalytical chemistry

ISSN

1572-6657

e-ISSN

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Svazek periodika

612

Číslo periodika v rámci svazku

2

Stát vydavatele periodika

NL - Nizozemsko

Počet stran výsledku

5

Strana od-do

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Kód UT WoS článku

000252600400005

EID výsledku v databázi Scopus

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