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dc.contributor.authorWalder, Robert B.-
dc.contributor.authorHonciuc, Andrei-
dc.contributor.authorSchwartz, Daniel K.-
dc.date.accessioned2018-12-11T16:07:19Z-
dc.date.available2018-12-11T16:07:19Z-
dc.date.issued2010-
dc.identifier.issn1520-6106de_CH
dc.identifier.issn1520-5207de_CH
dc.identifier.urihttps://digitalcollection.zhaw.ch/handle/11475/13756-
dc.description.abstractFluorescence recovery after photobleaching was used to characterize the diffusion of fluorescently labeled phospholipids at the oil/water interface for oil viscosities that varied over four orders of magnitude. Measurements were performed over a range of surface concentrations corresponding to molecular areas of 40-130 A(2)/molecule. As expected, the interfacial diffusion coefficient increased with molecular area, saturating at an area of approximately 100 A(2)/molecule. At molecular areas below approximately 80 A(2)/molecule, macroscopic domains of a condensed monolayer phase were observed; the diffusion of these domains was characterized by direct tracking and trajectory analysis. For oils with viscosity </=1500 cP, the diffusion coefficients of both individual probe molecules and condensed domains were consistent with a mechanism where the objects moved within the interface, experiencing drag from the adjacent bulk phases. Because this drag was dominated by the oil viscosity, the diffusion coefficients decreased proportionally to the inverse of the oil viscosity. However, for oils with higher viscosity, the diffusion coefficient of individual probe molecules decreased much more slowly. These observations suggested that two diffusive mechanisms are involved: one where surfactant molecules move within the interface and one that is analogous to the activated "hopping" processes that occur at the solid/liquid interface. This latter mode becomes significant only for very viscous oil phases.de_CH
dc.language.isoende_CH
dc.publisherAmerican Chemical Societyde_CH
dc.relation.ispartofThe Journal of Physical Chemistry Bde_CH
dc.rightsLicence according to publishing contractde_CH
dc.subjectDiffusionde_CH
dc.subjectOilsde_CH
dc.subjectPhospholipidsde_CH
dc.subjectPhotobleachingde_CH
dc.subjectSurface propertiesde_CH
dc.subjectViscosityde_CH
dc.subjectWaterde_CH
dc.subject.ddc540: Chemiede_CH
dc.titlePhospholipid diffusion at the oil-water interfacede_CH
dc.typeBeitrag in wissenschaftlicher Zeitschriftde_CH
dcterms.typeTextde_CH
zhaw.departementLife Sciences und Facility Managementde_CH
zhaw.organisationalunitInstitut für Chemie und Biotechnologie (ICBT)de_CH
dc.identifier.doi10.1021/jp1053869de_CH
dc.identifier.pmid20707362de_CH
zhaw.funding.euNode_CH
zhaw.issue35de_CH
zhaw.originated.zhawNode_CH
zhaw.pages.end11488de_CH
zhaw.pages.start11484de_CH
zhaw.publication.statuspublishedVersionde_CH
zhaw.volume114de_CH
zhaw.publication.reviewPeer review (Publikation)de_CH
Appears in collections:Publikationen Life Sciences und Facility Management

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Walder, R. B., Honciuc, A., & Schwartz, D. K. (2010). Phospholipid diffusion at the oil-water interface. The Journal of Physical Chemistry B, 114(35), 11484–11488. https://doi.org/10.1021/jp1053869
Walder, R.B., Honciuc, A. and Schwartz, D.K. (2010) ‘Phospholipid diffusion at the oil-water interface’, The Journal of Physical Chemistry B, 114(35), pp. 11484–11488. Available at: https://doi.org/10.1021/jp1053869.
R. B. Walder, A. Honciuc, and D. K. Schwartz, “Phospholipid diffusion at the oil-water interface,” The Journal of Physical Chemistry B, vol. 114, no. 35, pp. 11484–11488, 2010, doi: 10.1021/jp1053869.
WALDER, Robert B., Andrei HONCIUC und Daniel K. SCHWARTZ, 2010. Phospholipid diffusion at the oil-water interface. The Journal of Physical Chemistry B. 2010. Bd. 114, Nr. 35, S. 11484–11488. DOI 10.1021/jp1053869
Walder, Robert B., Andrei Honciuc, and Daniel K. Schwartz. 2010. “Phospholipid Diffusion at the Oil-Water Interface.” The Journal of Physical Chemistry B 114 (35): 11484–88. https://doi.org/10.1021/jp1053869.
Walder, Robert B., et al. “Phospholipid Diffusion at the Oil-Water Interface.” The Journal of Physical Chemistry B, vol. 114, no. 35, 2010, pp. 11484–88, https://doi.org/10.1021/jp1053869.


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