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dc.contributor.authorPark, E J.en_US
dc.contributor.authorErdem, T.en_US
dc.contributor.authorIbrahimova, V.en_US
dc.contributor.authorNizamoglu, S.en_US
dc.contributor.authorDemir, H. V.en_US
dc.contributor.authorTuncel, D.en_US
dc.date.accessioned2015/07/28en_US
dc.date.accessioned2015-07-28T12:06:00Z
dc.date.available2015-07-28T12:06:00Z
dc.date.issued2011-03-28en_US
dc.identifier.citationPark, E. J., Erdem, T., Ibrahimova, V., Nizamoglu, S., Demir, H. V., & Tuncel, D. (2011). White-emitting conjugated polymer nanoparticles with cross-linked shell for mechanical stability and controllable photometric properties in color-conversion LED applications. ACS nano, 5(4), 2483-2492.en_US
dc.identifier.issn1936-0851en_US
dc.identifier.urihttp://hdl.handle.net/11693/13372
dc.descriptionCataloged from PDF version of article.en_US
dc.description.abstractWe report on the synthesis and characterization of water-dispersible, mechanically stable conjugated polymer nanoparticles (CPNs) in shelled architecture with tunable emission and controllable photometric properties via cross-linking. Using a reprecipitation method, white-emitting polymer nanoparticles are prepared in different sizes by varying the concentration of polymer; the emission kinetics are tuned by controlling the shell formation. For this purpose, polyfluorene derivatives containing azide groups are selected that can be decomposed under UV light to generate very reactive species, which opportunely facilitate the inter- and intra-cross-linking of polymer chains to form shells. Nanoparticles before and after UV treatment are characterized by various techniques. Their size and morphologies are determined by using dynamic light scattering (DLS) measurements and imaging techniques including scanning electron microscopy (SEM) and atomic force microscopy (AFM). For optical characterization, UV-vis and steady-state and time-resolved fluorescent spectroscopies are performed. Solid-state behaviors of these CPNs are also Investigated by forming films through drop-casting. Moreover, the photometric calculations are also performed for films and dispersions to determine the color quality. A device has been constructed to show proof-of-principle white light generation from these nanoparticles. Additionally, mechanical stability studies are performed and demonstrated that these nanoparticles are indeed mechanically. stable by removing the solvent after cross-linking using a freeze-dryer and redispersing in water and THF. Optical and imaging data confirm that the redispersed particles preserve their shapes and sizes after cross-linking.en_US
dc.language.isoen_USen_US
dc.source.titleACS Nano en_US
dc.relation.isversionofhttp://dx.doi.org/10.1021/nn103598qen_US
dc.rightsCopyright © 2011 American Chemical Societyen_US
dc.subjectConjugated Polymer Nanoparticlesen_US
dc.subjectWhite Light Emissionen_US
dc.subjectCross-linked Shellen_US
dc.subjectColor Conversionen_US
dc.titleWhite-emitting Conjugated Polymer Nanoparticles with Cross-Linked Shell for Mechanical Stability and Controllable Photometric Properties in Color-Conversion LED Applicationsen_US
dc.typeResearch Paperen_US
dc.departmentDepartment of Chemistryen_US
dc.citation.spage2483en_US
dc.citation.epage2492en_US
dc.citation.volumeNumber5en_US
dc.citation.issueNumber4en_US
dc.identifier.doi10.1021/nn103598qen_US
dc.publisherAmerican Chemical Societyen_US
dc.type.urihttp://purl.org/eprint/type/JournalArticleen_US


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