Please use this identifier to cite or link to this item:
https://hdl.handle.net/10316/109088
DC Field | Value | Language |
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dc.contributor.author | Willis-Fox, Niamh | - |
dc.contributor.author | Marques, Ana Teresa | - |
dc.contributor.author | Arlt, Jochen | - |
dc.contributor.author | Scherf, Ullrich | - |
dc.contributor.author | Carlos, Luís D. | - |
dc.contributor.author | Burrows, Hugh | - |
dc.contributor.author | Evans, Rachel C. | - |
dc.date.accessioned | 2023-09-27T09:22:49Z | - |
dc.date.available | 2023-09-27T09:22:49Z | - |
dc.date.issued | 2015 | - |
dc.identifier.issn | 2041-6520 | pt |
dc.identifier.issn | 2041-6539 | pt |
dc.identifier.uri | https://hdl.handle.net/10316/109088 | - |
dc.description.abstract | Poly(fluorene) 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 diureasil 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 confined 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 profile 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 effectively 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 efficient 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 efficient route to highly desirable CPE-hybrid materials whose optoelectronic properties may be enhanced and tailored for a targeted application. | pt |
dc.language.iso | eng | pt |
dc.publisher | Royal Society of Chemistry | pt |
dc.relation | Science Foundation Ireland under Grant No. 12/IP/1608 | pt |
dc.relation | Irish Research Council - Government of Ireland postgraduate studentship | pt |
dc.relation | European Commission under the Seventh Framework Programme by means of the grant agreement for the Integrated Infrastructure Initiative No. 262348 European So Matter Infrastructure (ESMI). | pt |
dc.relation | COST action MP1202 (HINT – Hybrid Interfaces) | pt |
dc.relation | PEst-OE/QUI/UI0313/2014 | pt |
dc.relation | project CICECO-Aveiro Institute of Materials (Ref. FCT UID/CTM/50011/2013) | pt |
dc.rights | openAccess | pt |
dc.rights.uri | http://creativecommons.org/licenses/by-nc/4.0/ | pt |
dc.title | Synergistic photoluminescence enhancement in conjugated polymer-di-ureasil organic–inorganic composites | pt |
dc.type | article | - |
degois.publication.firstPage | 7227 | pt |
degois.publication.lastPage | 7237 | pt |
degois.publication.issue | 12 | pt |
degois.publication.title | Chemical Science | pt |
dc.peerreviewed | yes | pt |
dc.identifier.doi | 10.1039/C5SC02409A | pt |
degois.publication.volume | 6 | pt |
dc.date.embargo | 2015-01-01 | * |
uc.date.periodoEmbargo | 0 | pt |
item.cerifentitytype | Publications | - |
item.languageiso639-1 | en | - |
item.fulltext | Com Texto completo | - |
item.grantfulltext | open | - |
item.openairecristype | http://purl.org/coar/resource_type/c_18cf | - |
item.openairetype | article | - |
crisitem.author.researchunit | CQC - Coimbra Chemistry Centre | - |
crisitem.author.parentresearchunit | Faculty of Sciences and Technology | - |
crisitem.author.orcid | 0000-0003-3127-2298 | - |
Appears in Collections: | FCTUC Química - Artigos em Revistas Internacionais |
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Synergistic-photoluminescence-enhancement-in-conjugated-polymerdiureasil-organicinorganic-compositesChemical-Science.pdf | 1.93 MB | Adobe PDF | View/Open |
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