This title appears in the Scientific Report :
2019
Please use the identifier:
http://hdl.handle.net/2128/23189 in citations.
Please use the identifier: http://dx.doi.org/10.1021/acs.langmuir.9b01960 in citations.
Effect of the Anomeric Configuration on the Micellization of Hexadecylmaltoside Surfactants
Effect of the Anomeric Configuration on the Micellization of Hexadecylmaltoside Surfactants
The self-assembly of the two anomeric forms of n-hexadecyl-d-maltopyranoside (denoted α-C16G2 and β-C16G2) has been studied in dilute aqueous solution by means of surface tension measurements, scattering methods (dynamic light scattering, static light scattering, and small-angle X-ray and neutron sc...
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Personal Name(s): | Larsson, Johan (First author) |
---|---|
Sanchez-Fernandez, Adrian / Mahmoudi, Najet / Barnsley, Lester C. / Wahlgren, Marie / Nylander, Tommy (Corresponding author) / Ulvenlund, Stefan | |
Contributing Institute: |
Heinz Maier-Leibnitz Zentrum; MLZ Neutronenstreuung; JCNS-1 JCNS-FRM-II; JCNS-FRM-II |
Published in: | Langmuir, 35 (2019) 43, S. 13904 - 13914 |
Imprint: |
Washington, DC
ACS Publ.
2019
|
PubMed ID: |
31566987 |
DOI: |
10.1021/acs.langmuir.9b01960 |
Document Type: |
Journal Article |
Research Program: |
FRM II / MLZ Jülich Centre for Neutron Research (JCNS) |
Subject (ZB): | |
Link: |
Restricted Published on 2019-09-30. Available in OpenAccess from 2020-09-30. Published on 2019-09-30. Available in OpenAccess from 2020-09-30. Restricted |
Publikationsportal JuSER |
Please use the identifier: http://dx.doi.org/10.1021/acs.langmuir.9b01960 in citations.
The self-assembly of the two anomeric forms of n-hexadecyl-d-maltopyranoside (denoted α-C16G2 and β-C16G2) has been studied in dilute aqueous solution by means of surface tension measurements, scattering methods (dynamic light scattering, static light scattering, and small-angle X-ray and neutron scattering), and cryo-transmission electron microscopy at different surfactant concentrations and temperatures. Surface tension measurements demonstrate differences in the surfactant adsorption at the air–water interface, where α-C16G2 shows a lower CMC than β-C16G2. Similarly, micelle morphology was found to profoundly depend on anomerism. β-C16G2 preferentially forms very elongated micelles with large persistence lengths, whereas α-C16G2 assembles into smaller micelles for which the structure varies with concentration and temperature. The differences between the two surfactant anomers in terms of self-assembly can be attributed to the interaction between neighboring headgroups. Specifically, β-C16G2 allows for a closer packing in the palisade layer, hence reducing the micelle curvature and promoting the formation of more elongated micelles. Strong intermolecular headgroup interactions may also account for the observed rigidity of the micelles. |