The Hydrophobic Gap at High Hydrostatic Pressures
| Autor: | Michael Paulus, Christoph Hölzl, Paul Salmen, Julia Nase, Metin Tolan, Dominik Horinek, Florian J. Wirkert |
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| Rok vydání: | 2017 |
| Předmět: |
Electron density
Chemistry Hydrostatic pressure General Medicine 02 engineering and technology General Chemistry Electron 021001 nanoscience & nanotechnology Pressure response 01 natural sciences Reflectivity Catalysis law.invention X-ray reflectivity Molecular dynamics Crystallography law Chemical physics 0103 physical sciences Hydrostatic equilibrium 010306 general physics 0210 nano-technology |
| Zdroj: | Angewandte Chemie International Edition. 56:12958-12961 |
| ISSN: | 1433-7851 |
| Popis: | We have gained new insight into the so-called hydrophobic gap, a molecularly thin region of decreased electron density at the interface between water and a solid hydrophobic surface, by X-ray reflectivity experiments and molecular dynamics simulations at different hydrostatic pressures. Pressure variations show that the hydrophobic gap persists up to a pressure of 5 kbar. The electron depletion in the interfacial region strongly decreases with an increase in pressure, indicating that the interfacial region is compressed more strongly than bulk water. The decrease is most significant up to 2 kbar; beyond that, the pressure response of the depletion is less pronounced. |
| Databáze: | OpenAIRE |
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