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dc.contributor.author
Navarro, Lucila
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dc.contributor.author
Thünemann, Andreas F.
dc.contributor.author
Klinger, Daniel
dc.date.available
2023-01-19T14:12:01Z
dc.date.issued
2022-03
dc.identifier.citation
Navarro, Lucila; Thünemann, Andreas F.; Klinger, Daniel; Solvent Annealing of Striped Ellipsoidal Block Copolymer Particles: Reversible Control over Lamellae Asymmetry, Aspect Ratio, and Particle Surface; American Chemical Society Inc; ACS Macro Letters; 11; 3; 3-2022; 329-335
dc.identifier.issn
2161-1653
dc.identifier.uri
http://hdl.handle.net/11336/185017
dc.description.abstract
Solvent annealing is a versatile tool to adjust the shape and morphology of block copolymer (BCP) particles. During this process, polar solvents are often used for block-selective swelling. However, such water-miscible solvents can induce (partial) solubilization of one block in the surrounding aqueous medium, thus, causing complex structural variations and even particle disassembly. To reduce the complexity in morphology control, we focused on toluene as a nonpolar polystyrene-selective solvent for the annealing of striped polystyrene-b-poly(2-vinylpyridine) (PS-b-P2VP) ellipsoids. The selective stretching of PS chains produces unique asymmetric lamellae structures, which translate to an increase in the particle aspect ratio after toluene evaporation. Complete reversibility is achieved by changing to chloroform as a nonselective solvent. Moreover, surfactants can be used to tune block-selective wetting of the particle surface during the annealing; for example, a PS shell can protect the internal lamellae structure from disassembly. Overall, this versatile postassembly process enables the tailoring of the structural features of striped colloidal ellipsoids by only using commercial BCPs and solvents.
dc.format
application/pdf
dc.language.iso
eng
dc.publisher
American Chemical Society Inc
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dc.rights
info:eu-repo/semantics/openAccess
dc.rights.uri
https://creativecommons.org/licenses/by-nc-nd/2.5/ar/
dc.subject
BCP
dc.subject
ELIPSOIDAL PARTICLES
dc.subject
SOLVENT SWELLING
dc.subject.classification
Otras Ingeniería de los Materiales
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dc.subject.classification
Ingeniería de los Materiales
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dc.subject.classification
INGENIERÍAS Y TECNOLOGÍAS
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dc.title
Solvent Annealing of Striped Ellipsoidal Block Copolymer Particles: Reversible Control over Lamellae Asymmetry, Aspect Ratio, and Particle Surface
dc.type
info:eu-repo/semantics/article
dc.type
info:ar-repo/semantics/artículo
dc.type
info:eu-repo/semantics/publishedVersion
dc.date.updated
2022-07-04T20:16:37Z
dc.journal.volume
11
dc.journal.number
3
dc.journal.pagination
329-335
dc.journal.pais
Estados Unidos
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dc.journal.ciudad
Washington
dc.description.fil
Fil: Navarro, Lucila. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Santa Fe. Instituto de Desarrollo Tecnológico para la Industria Química. Universidad Nacional del Litoral. Instituto de Desarrollo Tecnológico para la Industria Química; Argentina
dc.description.fil
Fil: Thünemann, Andreas F.. No especifíca;
dc.description.fil
Fil: Klinger, Daniel. Freie Universität Berlin; Alemania
dc.journal.title
ACS Macro Letters
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/doi/https://doi.org/10.1021/acsmacrolett.1c00665
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