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dc.contributor.author
Allie, Safiya
dc.contributor.author
Hegoburu, Ignacio
dc.contributor.author
Shin, Min Jeong
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Jung, Jung Young
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Toader, Violeta
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Rey, Alejandro D.
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Soulé, Ezequiel Rodolfo
dc.contributor.author
Reven, Linda
dc.date.available
2019-09-05T21:20:38Z
dc.date.issued
2018-10-08
dc.identifier.citation
Allie, Safiya; Hegoburu, Ignacio; Shin, Min Jeong; Jung, Jung Young; Toader, Violeta; et al.; Polymer functionalized nanoparticles in liquid crystals: Combining PDLCs with LC nanocomposites; Royal Society of Chemistry; Soft Matter; 14; 42; 8-10-2018; 8580-8589
dc.identifier.issn
1744-683X
dc.identifier.uri
http://hdl.handle.net/11336/83016
dc.description.abstract
Liquid crystal (LC)-polymer blends are important stimuli responsive materials already employed in a wide range of applications whereas nanoparticle (NP)-LC blends are an emerging class of nanocomposites. Polymer ligands offer the advantages of synthetic simplicity along with chemical and molecular weight tunability. Here we compare the phase behavior of 5CB blended with poly(ethylene oxide) (PEO) and with gold NPs functionalized with thiolated PEO (AuNP-PEO) as a function of PEO concentration by DSC, POM and 13C NMR spectroscopy. Both PEO and the AuNP-PEO form uniform dispersions in isotropic 5CB and phase separate below the I-N phase transition temperature. Above the PEO crystallization temperature, the PEO/5CB blends show the expected biphasic state of PEO rich-isotropic liquid co-existing with PEO-poor nematic droplets. At PEO concentrations above 10 wt%, nematic 5CB nucleates with PEO crystallization. Both PEO and AuNP-PEO induce homeotropic alignment of the 5CB matrix immediately below TNI. The AuNP-PEO/5CB blends form thermally reversible cellular networks similar to AuNPs functionalized with low molecular weight mesogenic ligands. A thermodynamic model to account for the observed phase behavior is presented.
dc.format
application/pdf
dc.language.iso
eng
dc.publisher
Royal Society of Chemistry
dc.rights
info:eu-repo/semantics/openAccess
dc.rights.uri
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.subject
Liquid Crystals
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Nanoparticles
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Phase Transition
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Ingeniería de los Materiales
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Ingeniería de los Materiales
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INGENIERÍAS Y TECNOLOGÍAS
dc.title
Polymer functionalized nanoparticles in liquid crystals: Combining PDLCs with LC nanocomposites
dc.type
info:eu-repo/semantics/article
dc.type
info:ar-repo/semantics/artículo
dc.type
info:eu-repo/semantics/publishedVersion
dc.date.updated
2019-08-01T19:58:37Z
dc.journal.volume
14
dc.journal.number
42
dc.journal.pagination
8580-8589
dc.journal.pais
Reino Unido
dc.journal.ciudad
Cambridge
dc.description.fil
Fil: Allie, Safiya. McGill University; Canadá
dc.description.fil
Fil: Hegoburu, Ignacio. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Mar del Plata. Instituto de Investigaciones en Ciencia y Tecnología de Materiales. Universidad Nacional de Mar del Plata. Facultad de Ingeniería. Instituto de Investigaciones en Ciencia y Tecnología de Materiales; Argentina
dc.description.fil
Fil: Shin, Min Jeong. McGill University; Canadá
dc.description.fil
Fil: Jung, Jung Young. McGill University; Canadá
dc.description.fil
Fil: Toader, Violeta. McGill University; Canadá
dc.description.fil
Fil: Rey, Alejandro D.. McGill University; Canadá
dc.description.fil
Fil: Soulé, Ezequiel Rodolfo. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Mar del Plata. Instituto de Investigaciones en Ciencia y Tecnología de Materiales. Universidad Nacional de Mar del Plata. Facultad de Ingeniería. Instituto de Investigaciones en Ciencia y Tecnología de Materiales; Argentina
dc.description.fil
Fil: Reven, Linda. McGill University; Canadá
dc.journal.title
Soft Matter
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/doi/http://dx.doi.org/10.1039/C8SM01192C
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/url/https://pubs.rsc.org/en/content/articlelanding/2018/sm/c8sm01192c
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