All

What are you looking for?

All
Projects
Results
Organizations

Quick search

  • Projects supported by TA ČR
  • Excellent projects
  • Projects with the highest public support
  • Current projects

Smart search

  • That is how I find a specific +word
  • That is how I leave the -word out of the results
  • “That is how I can find the whole phrase”

Electric Field Effect on Phospholipid Monolayers at an Aqueous-Organic Liquid-Liquid Interface

The result's identifiers

  • Result code in IS VaVaI

    <a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216305%3A26620%2F14%3APU112375" target="_blank" >RIV/00216305:26620/14:PU112375 - isvavai.cz</a>

  • Result on the web

    <a href="http://pubs.acs.org/doi/abs/10.1021/jp5098525" target="_blank" >http://pubs.acs.org/doi/abs/10.1021/jp5098525</a>

  • DOI - Digital Object Identifier

    <a href="http://dx.doi.org/10.1021/jp5098525" target="_blank" >10.1021/jp5098525</a>

Alternative languages

  • Result language

    angličtina

  • Original language name

    Electric Field Effect on Phospholipid Monolayers at an Aqueous-Organic Liquid-Liquid Interface

  • Original language description

    The electric potential difference across cell membranes, known as the membrane potential, plays an important role in the activation of many biological processes. To investigate the effect of the membrane potential on the molecular ordering of lipids within a biomimetic membrane, a self-assembled monolayer of 1-stearoyl-2-oleoyl-snglycero- 3-phosphocholine (SOPC) lipids at an electrified 1,2-dichloroethane/water interface is studied with X-ray reflectivity and interfacial tension. Measurements over a range of electric potential differences, -150 to +130 mV, that encompass the range of typical biomembrane potentials demonstrate a nearly constant and stable structure whose lipid interfacial density is comparable to that found in other biomimetic membrane systems. Measurements at higher positive potentials, up to 330 mV, illustrate a monotonic decrease in the lipid interfacial density and accompanying variations in the interfacial configuration of the lipid. Molecular dynamics simulations, designed to mimic the experimental conditions, show that the measured changes in lipid configuration are due primarily to the variation in area per lipid with increasing applied electric field. Rotation of the SOPC dipole moment by the torque from the applied electric field appears to be negligible, except at the highest measured potentials. The simulations confirm in atomistic detail the measured potentialdependent characteristics of SOPC monolayers. Our hybrid study sheds light on phospholipid monolayer stability under different membrane potentials, which is important for understanding membrane processes. This study also illustrates the use of X-ray surface scattering to probe the ordering of surfactant monolayers at an electrified aqueous-organic liquid-liquid interface.

  • Czech name

  • Czech description

Classification

  • Type

    J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database

  • CEP classification

  • OECD FORD branch

    10403 - Physical chemistry

Result continuities

  • Project

    <a href="/en/project/ED1.1.00%2F02.0068" target="_blank" >ED1.1.00/02.0068: Central european institute of technology</a><br>

  • Continuities

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

Others

  • Publication year

    2014

  • Confidentiality

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

Data specific for result type

  • Name of the periodical

    JOURNAL OF PHYSICAL CHEMISTRY B

  • ISSN

    1089-5647

  • e-ISSN

  • Volume of the periodical

    119

  • Issue of the periodical within the volume

    29

  • Country of publishing house

    US - UNITED STATES

  • Number of pages

    15

  • Pages from-to

    9319-9334

  • UT code for WoS article

    000358623900055

  • EID of the result in the Scopus database

    2-s2.0-84937893765