Striolo, A;
Grady, BP;
(2017)
Surfactant Assemblies on Selected Nano-Structured Surfaces: Evidence, Driving Forces, and Applications.
Langmuir
, 33
(33)
pp. 8099-8113.
10.1021/acs.langmuir.7b00756.
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Abstract
Surfactant adsorption at solid-liquid interfaces is critical for a number of applications of vast industrial interest, and can also be used to seed surface-modification processes. Many of the surfaces of interest are nano-structured, as they might present surface roughness at the molecular scale, chemical heterogeneity, as well as a combination of both surface roughness and chemical heterogeneity. These effects provide 'lateral' confinement on the surfactant aggregates. It is of interest to quantify how much surfactant adsorbs on such nano-structured surfaces, and how the surfactant aggregates vary as the degree of lateral confinement changes. This review focuses on experimental evidence on selected substrates, including gold and carbon-based substrates, suggesting that lateral confinement can have pronounced effects both on the amount adsorbed and on the morphology of the aggregates, as well as on a systematic study, via diverse simulation approaches, on the effect of lateral confinement on the structure of the surfactant aggregates. Atomistic and coarse-grained simulations conducted for surfactants on graphene sheets and carbon nanotubes are reviewed, as well as coarse-grained simulations for surfactant adsorption on nano-structured surfaces. Finally, we suggest a few possible extensions of these studies that could positively impact a few practical applications. In particular, the simultaneous effect of lateral confinement and of the co-adsorption of molecular compounds within the surface aggregates is expected to yield interesting fundamental results with long-lasting consequences in applications ranging from drug-delivery to the design of advanced materials.
| Type: | Article |
|---|---|
| Title: | Surfactant Assemblies on Selected Nano-Structured Surfaces: Evidence, Driving Forces, and Applications |
| Location: | United States |
| Open access status: | An open access version is available from UCL Discovery |
| DOI: | 10.1021/acs.langmuir.7b00756 |
| Publisher version: | http://doi.org/10.1021/acs.langmuir.7b00756 |
| Language: | English |
| Additional information: | This is an open access article published under an ACS AuthorChoice License, which permits copying and redistribution of the article or any adaptations for non-commercial purposes. |
| Keywords: | Graphene Sheets, Carbon Nanotubes, Meso-scale Simulations |
| UCL classification: | UCL UCL > Provost and Vice Provost Offices > UCL BEAMS UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Engineering Science UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Engineering Science > Dept of Chemical Engineering |
| URI: | https://discovery.ucl.ac.uk/id/eprint/1556524 |
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