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dc.contributor.author
Mana, Carla Daniela  
dc.contributor.author
Torchia, Gustavo Adrian  
dc.contributor.author
Tomba, Juan Pablo  
dc.date.available
2019-11-21T14:35:22Z  
dc.date.issued
2018-04  
dc.identifier.citation
Mana, Carla Daniela; Torchia, Gustavo Adrian; Tomba, Juan Pablo; A study of polymer chain diffusion by surface enhanced Raman: Effects of plasmonic substrate topology; Royal Society of Chemistry; Soft Matter; 14; 17; 4-2018; 3315-3323  
dc.identifier.issn
1744-683X  
dc.identifier.uri
http://hdl.handle.net/11336/89376  
dc.description.abstract
We report on a new methodology to track chain interdiffusion between polymer slabs based on Raman enhanced by plasmonic substrates. Diffusion is studied in a deuterated-polystyrene/polystyrene (dPS/PS) polymer pair, designed to provide a well-characterized diffusion behavior. The bilayer, 160 nm thick in total, is supported on a plasmonic substrate that provides local amplification of Raman signals in sample regions of close proximity to it. Gold-based substrates with structures of inverted pyramids, spherical nanoparticles and tipped pillars were investigated. Interdiffusion between dPS and PS is promoted upon annealing and followed in situ by dynamic spectral acquisition. A simple model that describes the coupling between the sampled region arising from the plasmonic effect and the diffusion process is employed to interpret spectral evolution data. It is shown that a highly regular topology and surface continuity are key features of the plasmonic substrate in order to provide reliable results. With pyramidal substrates, the most suitable substrates for this application, data are consistent with diffusion coefficients in the range 10-13-10-15 cm2 s-1 and dimensions of sampled regions below 40 nm. The strategy provides a reliable labeling-free technique to investigate polymer interdiffusion on the nanoscale.  
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
-  
dc.subject.classification
Otras Nanotecnología  
dc.subject.classification
Nanotecnología  
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INGENIERÍAS Y TECNOLOGÍAS  
dc.title
A study of polymer chain diffusion by surface enhanced Raman: Effects of plasmonic substrate topology  
dc.type
info:eu-repo/semantics/article  
dc.type
info:ar-repo/semantics/artículo  
dc.type
info:eu-repo/semantics/publishedVersion  
dc.date.updated
2019-10-21T18:34:38Z  
dc.journal.volume
14  
dc.journal.number
17  
dc.journal.pagination
3315-3323  
dc.journal.pais
Reino Unido  
dc.description.fil
Fil: Mana, Carla Daniela. Universidad Nacional de Mar del Plata; Argentina  
dc.description.fil
Fil: Torchia, Gustavo Adrian. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Centro de Investigaciones Ópticas. Provincia de Buenos Aires. Gobernación. Comisión de Investigaciones Científicas. Centro de Investigaciones Ópticas. Universidad Nacional de La Plata. Centro de Investigaciones Ópticas; Argentina  
dc.description.fil
Fil: Tomba, Juan Pablo. Universidad Nacional de Mar del Plata; Argentina  
dc.journal.title
Soft Matter  
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/url/http://xlink.rsc.org/?DOI=C8SM00017D  
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/doi/http://dx.doi.org/10.1039/C8SM00017D