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Sylvie Roke

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Related publications (133)

Polyelectrolytes induce water-water correlations that result in dramatic viscosity changes and nuclear quantum effects

Sylvie Roke, Halil Ibrahim Okur, Jan Dedic

Ions interact with water via short-ranged ion-dipole interactions. Recently, an additional unexpected long-ranged interaction was found: The total electric field of ions influences water-water correlations over tens of hydration shells, leading to the Jone ...

American Association for the Advancement of Science (AAAS)2019

Long-range interactions of ions with water determine the Jones-Ray effect

Sylvie Roke

AMER CHEMICAL SOC2019

Label-free and charge-sensitive dynamic imaging of lipid membrane hydration on millisecond time scales

Sylvie Roke, Orly Bagunu Tarun

Biological membranes are highly dynamic and complex lipid bilayers, responsible for the fate of living cells. To achieve this function, the hydrating environment is crucial. However, membrane imaging typically neglects water, focusing on the insertion of p ...

2018

Membrane water for probing neuronal membrane potentials and ionic fluxes at the single cell level

Pierre Magistretti, Pascal Jourdain, Sylvie Roke, Marie Eve Pascale Didier, Orly Bagunu Tarun

Neurons communicate through electrochemical signaling within a complex network. These signals are composed of changes in membrane potentials and are traditionally measured with the aid of (toxic) fluorescent labels or invasive electrical probes. Here, we d ...

Nature Publishing Group2018

Polycation Interactions with Zwitterionic Phospholipid Monolayers on Oil Nanodroplets Suspensions in Water (D2O) Probed by Sum Frequency Scattering

Sylvie Roke, Nikolay Smolentsev

By combining dynamic light scattering (DLS) measurements and infrared (IR) spectroscopy with the interface- and bond-specificity of vibrational sum frequency generation scattering (SFS) spectroscopy, we probe several structural aspects of how zwitterionic ...

2018

The Jones–Ray Effect Is Not Caused by Surface-Active Impurities

Sylvie Roke, Halil Ibrahim Okur, Eric Tyrode

Pure aqueous electrolyte solutions display a minimum in surface tension at concentrations of 2 ± 1 mM. This effect has been a source of controversy since it was first reported by Jones and Ray in the 1930s. The Jones–Ray effect has frequently been dismisse ...

2018

Interaction of Oil and Lipids in Freestanding Lipid Bilayer Membranes Studied with Label-Free High-Throughput Wide-Field Second-Harmonic Microscopy

Sylvie Roke, Orly Bagunu Tarun, Maksim Eremchev

The interaction of oils and lipids is relevant for membrane biochemistry since the cell uses bilayer membranes, lipid droplets, and oily substances in its metabolic cycle. In addition, a variety of model lipid membrane systems, such as freestanding horizon ...

2018

Nanoemulsions of lipid droplets - a new model lipid system

Sylvie Roke, Halil Ibrahim Okur

WILEY2018

The interfacial structure of water droplets in a hydrophobic liquid

Sylvie Roke, Nikolay Smolentsev

AMER CHEMICAL SOC2018

Kinetically Stable Triglyceride-Based Nanodroplets and Their Interactions with Lipid-Specific Proteins

Sylvie Roke, Cornelis Ulrich Lütgebaucks, Halil Ibrahim Okur

2018

Optical label- and model-free probe of the surface potential of nano and microscopic objects in aqueous solution

Sylvie Roke

2018

Second harmonic and sum frequency generation from aqueous interfaces is modulated by interference

Sylvie Roke

2018

The molecular mechanism of nanodroplet stability

Yixing Chen, Sylvie Roke, Evangelia Zdrali, Halil Ibrahim Okur

2018

Intermolecular headgroup interaction and hydration as driving forces for lipid transmembrane asymmetry

Sylvie Roke, Cornelis Ulrich Lütgebaucks, Nikolay Smolentsev, Halil Ibrahim Okur

ACS2018

Hydration mediated interfacial transitions on mixed hydrophobic/hydrophilic nanodroplet interfaces

Sylvie Roke, Rüdiger Scheu, Nikolay Smolentsev, Filip Kovacik, Halil Ibrahim Okur

Interfacial phase transitions are of fundamental importance for climate, industry, and biological processes. In this work, we observe a hydration mediated surface transition in supercooled oil nanodroplets in aqueous solutions using second harmonic and sum ...

2018

Jones-Ray effect reinterpreted: Surface tension minima of low ionic strength electrolyte solutions are caused by electric field induced water-water correlations

Yixing Chen, Sylvie Roke, David Mark Wilkins, Halil Ibrahim Okur

ACS2018

Optical label- and model-free probing of the surface potential of nanoscale silica particles in aqueous solution

Arianna Marchioro, Sylvie Roke, Cornelis Ulrich Lütgebaucks

AMER CHEMICAL SOC2018

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Sylvie Roke

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Polyelectrolytes induce water-water correlations that result in dramatic viscosity changes and nuclear quantum effects

Long-range interactions of ions with water determine the Jones-Ray effect

Label-free and charge-sensitive dynamic imaging of lipid membrane hydration on millisecond time scales

Membrane water for probing neuronal membrane potentials and ionic fluxes at the single cell level

Polycation Interactions with Zwitterionic Phospholipid Monolayers on Oil Nanodroplets Suspensions in Water (D2O) Probed by Sum Frequency Scattering

The Jones–Ray Effect Is Not Caused by Surface-Active Impurities

Interaction of Oil and Lipids in Freestanding Lipid Bilayer Membranes Studied with Label-Free High-Throughput Wide-Field Second-Harmonic Microscopy

Nanoemulsions of lipid droplets - a new model lipid system

The interfacial structure of water droplets in a hydrophobic liquid

Kinetically Stable Triglyceride-Based Nanodroplets and Their Interactions with Lipid-Specific Proteins

Optical label- and model-free probe of the surface potential of nano and microscopic objects in aqueous solution

Second harmonic and sum frequency generation from aqueous interfaces is modulated by interference

The molecular mechanism of nanodroplet stability

Intermolecular headgroup interaction and hydration as driving forces for lipid transmembrane asymmetry

Hydration mediated interfacial transitions on mixed hydrophobic/hydrophilic nanodroplet interfaces

Optical imaging of surface chemistry and dynamics in confinement

Label-free dynamic imaging of free standing lipid membranes and their hydration

Hydration mediated interfacial transitions on mixed hydrophobic/hydrophilic nanodroplet interfaces

Jones-Ray effect reinterpreted: Surface tension minima of low ionic strength electrolyte solutions are caused by electric field induced water-water correlations

Optical label- and model-free probing of the surface potential of nanoscale silica particles in aqueous solution