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dc.contributor.authorEVANS, RACHEL
dc.date.accessioned2015-12-08T14:59:39Z
dc.date.available2015-12-08T14:59:39Z
dc.date.issued2015
dc.date.submitted2015en
dc.identifier.citationWillis-Fox N., Marques A., Marques A., Arlt J., Scherf U., Carlos L., Burrows H., Evans R., Synergistic photoluminescence enhancement in conjugated polymer-di-ureasil organic-inorganic composites, Chemical Science, 6, 12, 2015, 7227-7237en
dc.identifier.issn20416520
dc.identifier.otherY
dc.identifier.urihttp://hdl.handle.net/2262/75091
dc.descriptionPUBLISHEDen
dc.description.abstractPoly( fl uorene) conjugated polyelectrolyte (CPE)-di-ureasil organic – inorganic composites have been prepared using a versatile sol – gel processing method, which enables selective localisation of the CPE within the di- ureasil matrix. Introduction of the CPE during the sol – gel reaction leads to a homogeneous distribution of the CPE throughout the di-ureasil, whereas a post-synthesis solvent permeation route leads to the formation of a con fi ned layer of the CPE at the di-ureasil surface. The CPE and the di-ureasil both function as photoactive components, contributing directly to, and enhancing the optical properties of their composite material. The bright blue photoluminescence exhibited by CPE-di-ureasils is reminiscent of the parent CPE; however the distinct contribution of the di-ureasil to the steady-state emission pro fi le is also apparent. This is accompanied by a dramatic increase in the photoluminescence quantum yield to >50%, which is a direct consequence of the synergy between the two components. Picosecond time-correlated single photon counting measurements reveal that the di-ureasil e ff ectively isolates the CPE chains, leading to emissive trap sites which have a high radiative probability. Moreover, intimate mixing of the CPE and the di-ureasil, coupled with their strong spectral overlap, results in e ffi cient excitation energy transfer from the di-ureasil to these emissive traps. Given the simple, solution-based fabrication method and the structural tunability of the two components, this approach presents an e ffi cient route to highly desirable CPE-hybrid materials whose optoelectronic properties may be enhanced and tailored for a targeted application.en
dc.format.extent7227-7237en
dc.language.isoenen
dc.relation.ispartofseriesChemical Science;
dc.relation.ispartofseries6;
dc.relation.ispartofseries12;
dc.rightsYen
dc.subjectconjugated polymer-di-ureasil organic – inorganic compositesen
dc.titleSynergistic photoluminescence enhancement in conjugated polymer-di-ureasil organic-inorganic compositesen
dc.typeJournal Articleen
dc.type.supercollectionscholarly_publicationsen
dc.type.supercollectionrefereed_publicationsen
dc.identifier.peoplefinderurlhttp://people.tcd.ie/raevans
dc.identifier.rssinternalid108601
dc.identifier.doihttp://dx.doi.org/10.1039/c5sc02409a
dc.rights.ecaccessrightsopenAccess


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