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Sub-3-Nanometer Domain Spacings of Ultrahigh-χ Multiblock Copolymers with Pendant Ionic Groups

Sub-3-Nanometer Domain Spacings of Ultrahigh-χ Multiblock Copolymers with Pendant Ionic Groups

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PARK, Jinseok, Anne STAIGER, Stefan MECKING, Karen I WINEY, 2021. Sub-3-Nanometer Domain Spacings of Ultrahigh-χ Multiblock Copolymers with Pendant Ionic Groups. In: ACS nano. ACS Publications. 15(10), pp. 16738-16747. ISSN 1936-0851. eISSN 1936-086X. Available under: doi: 10.1021/acsnano.1c06734

@article{Park2021-10-26Sub3N-55647, title={Sub-3-Nanometer Domain Spacings of Ultrahigh-χ Multiblock Copolymers with Pendant Ionic Groups}, year={2021}, doi={10.1021/acsnano.1c06734}, number={10}, volume={15}, issn={1936-0851}, journal={ACS nano}, pages={16738--16747}, author={Park, Jinseok and Staiger, Anne and Mecking, Stefan and Winey, Karen I} }

<rdf:RDF xmlns:dcterms="http://purl.org/dc/terms/" xmlns:dc="http://purl.org/dc/elements/1.1/" xmlns:rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#" xmlns:bibo="http://purl.org/ontology/bibo/" xmlns:dspace="http://digital-repositories.org/ontologies/dspace/0.1.0#" xmlns:foaf="http://xmlns.com/foaf/0.1/" xmlns:void="http://rdfs.org/ns/void#" xmlns:xsd="http://www.w3.org/2001/XMLSchema#" > <rdf:Description rdf:about="https://kops.uni-konstanz.de/rdf/resource/123456789/55647"> <foaf:homepage rdf:resource="http://localhost:8080/jspui"/> <dc:creator>Winey, Karen I</dc:creator> <bibo:uri rdf:resource="https://kops.uni-konstanz.de/handle/123456789/55647"/> <dcterms:abstract xml:lang="eng">We investigated the temperature-dependent phase behavior and interaction parameter of polyethylene-based multiblock copolymers with pendant ionic groups. These step-growth polymers contain short polyester blocks with a single Li+SO3- group strictly alternating with polyethylene blocks of x-carbons (PESxLi, x = 12, 18, 23). At room temperature, these polymers exhibit layered morphologies with semicrystalline polyethylene blocks. Upon heating above the melting point (∼130 °C), PES18Li shows two order-to-order transitions involving Ia3̅d gyroid and hexagonal morphologies. For PES12Li, an order-to-disorder transition accompanies the melting of the polyethylene blocks. Notably, a Flory-Huggins interaction parameter was determined from the disordered morphologies of PES12Li using mean-field theory: χ(T) = 77.4/T + 2.95 (T in Kelvin) and χ(25 °C) ≈ 3.21. This ultrahigh χ indicates that the polar ionic and nonpolar polyethylene segments are highly incompatible and affords well-ordered morphologies even when the combined length of the alternating blocks is just 18-29 backbone atoms. This combination of ultrahigh χ and short multiblocks produces sub-3-nm domain spacings that facilitate the control of block copolymer self-assembly for various fields of study, including nanopatterning.</dcterms:abstract> <dc:language>eng</dc:language> <dc:contributor>Mecking, Stefan</dc:contributor> <dspace:isPartOfCollection rdf:resource="https://kops.uni-konstanz.de/rdf/resource/123456789/29"/> <dc:contributor>Staiger, Anne</dc:contributor> <dc:date rdf:datatype="http://www.w3.org/2001/XMLSchema#dateTime">2021-11-24T15:48:48Z</dc:date> <dcterms:title>Sub-3-Nanometer Domain Spacings of Ultrahigh-χ Multiblock Copolymers with Pendant Ionic Groups</dcterms:title> <dcterms:issued>2021-10-26</dcterms:issued> <dc:contributor>Winey, Karen I</dc:contributor> <dcterms:isPartOf rdf:resource="https://kops.uni-konstanz.de/rdf/resource/123456789/29"/> <void:sparqlEndpoint rdf:resource="http://localhost/fuseki/dspace/sparql"/> <dc:contributor>Park, Jinseok</dc:contributor> <dcterms:available rdf:datatype="http://www.w3.org/2001/XMLSchema#dateTime">2021-11-24T15:48:48Z</dcterms:available> <dc:creator>Staiger, Anne</dc:creator> <dc:creator>Mecking, Stefan</dc:creator> <dc:creator>Park, Jinseok</dc:creator> </rdf:Description> </rdf:RDF>

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