Publication type: Article in scientific journal
Type of review: Peer review (publication)
Title: Single-molecule observations of surfactant diffusion at the solution-solid interface
Authors: Honciuc, Andrei
Harant, Adam W.
Schwartz, Daniel K.
DOI: 10.1021/la8007365
Published in: Langmuir
Volume(Issue): 24
Issue: 13
Pages: 6562
Pages to: 6566
Issue Date: 2008
Publisher / Ed. Institution: American Chemical Society
ISSN: 0743-7463
Language: English
Subject (DDC): 540: Chemistry
Abstract: Individual fatty acid molecules adsorbed at the interface between hexadecane and fused silica have been tracked using total internal reflection fluorescence microscopy. Two cooperative diffusive mechanisms are observed: continuous small-scale Brownian motion and occasional large “jumps.” The continuous diffusion exhibits evidence of confinement. The effective interfacial diffusion coefficients for each mechanism increase systematically with temperature; an Arrhenius analysis gives an activation barrier of ∼50 kJ/mol for “jumping” and an upper limit of ∼10 kJ/mol for confined diffusion.
Fulltext version: Published version
License (according to publishing contract): Licence according to publishing contract
Departement: Life Sciences and Facility Management
Organisational Unit: Institute of Chemistry and Biotechnology (ICBT)
Appears in collections:Publikationen Life Sciences und Facility Management

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