Concentration dependent pathways in spontaneous self-assembly of unilamellar vesicles
| dc.contributor.author | Gummel, Jérémie | |
| dc.contributor.author | Sztucki, Michael | |
| dc.contributor.author | Narayanan, Theyencheri | |
| dc.contributor.author | Gradzielski, Michael | |
| dc.date.accessioned | 2016-07-01T06:27:36Z | |
| dc.date.available | 2016-07-01T06:27:36Z | |
| dc.date.issued | 2011 | |
| dc.description | Dieser Beitrag ist mit Zustimmung des Rechteinhabers aufgrund einer (DFG geförderten) Allianz- bzw. Nationallizenz frei zugänglich. | de |
| dc.description | This publication is with permission of the rights owner freely accessible due to an Alliance licence and a national licence (funded by the DFG, German Research Foundation) respectively. | en |
| dc.description.abstract | We report on the structural dynamics underlying the formation of unilamellar vesicles upon mixing dilute solutions of anionic and zwitterionic surfactant solutions. The spontaneous self-assembly was initiated by rapid mixing of the surfactant solutions using a stopped-flow device and the transient intermediate structures were probed by time-resolved small-angle X-ray scattering. The initial surfactant solutions comprised of anionic lithium perfluorooctanoate and zwitterionic tetradecyldimethylamine oxide, where the mixtures form unilamellar vesicles over a wide range of concentrations and mixing ratios. We found that disk-like transient intermediate structures are formed at higher concentrations while more elongated forms such as cylinder-like and torus-like micelles are involved at lower concentrations. These differences are attributed to monomer addition mechanism dominating the self-assembly process when the initial concentration is well below the critical micellar concentration of the anionic surfactant, while at higher concentrations the process is governed by fusion of disk-like mixed micelles. This means that the pathway of vesicle formation is determined by the proximity to the critical micellar concentration of the more soluble component. | en |
| dc.identifier.eissn | 1744-6848 | |
| dc.identifier.issn | 1744-683X | |
| dc.identifier.uri | https://depositonce.tu-berlin.de/handle/11303/5762 | |
| dc.identifier.uri | http://dx.doi.org/10.14279/depositonce-5382 | |
| dc.language.iso | en | |
| dc.rights.uri | http://rightsstatements.org/vocab/InC/1.0/ | en |
| dc.subject.ddc | 530 Physik | de |
| dc.title | Concentration dependent pathways in spontaneous self-assembly of unilamellar vesicles | en |
| dc.type | Article | en |
| dc.type.version | publishedVersion | en |
| dcterms.bibliographicCitation.doi | 10.1039/c1sm05354j | |
| dcterms.bibliographicCitation.issue | 12 | |
| dcterms.bibliographicCitation.journaltitle | Soft matter | en |
| dcterms.bibliographicCitation.originalpublishername | Royal Society of Chemistry | de |
| dcterms.bibliographicCitation.originalpublisherplace | Cambridge | de |
| dcterms.bibliographicCitation.pageend | 5738 | |
| dcterms.bibliographicCitation.pagestart | 5731 | |
| dcterms.bibliographicCitation.volume | 7 | |
| tub.accessrights.dnb | domain | |
| tub.affiliation | Fak. 2 Mathematik und Naturwissenschaften::Inst. Chemie | de |
| tub.affiliation.faculty | Fak. 2 Mathematik und Naturwissenschaften | de |
| tub.affiliation.institute | Inst. Chemie | de |
| tub.publisher.universityorinstitution | Technische Universität Berlin |
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