dc.contributor.author | EVANS, RACHEL | |
dc.date.accessioned | 2015-12-08T14:59:39Z | |
dc.date.available | 2015-12-08T14:59:39Z | |
dc.date.issued | 2015 | |
dc.date.submitted | 2015 | en |
dc.identifier.citation | Willis-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, 7227-7237 | en |
dc.identifier.issn | 20416520 | |
dc.identifier.other | Y | |
dc.identifier.uri | http://hdl.handle.net/2262/75091 | |
dc.description | PUBLISHED | en |
dc.description.abstract | Poly(
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.extent | 7227-7237 | en |
dc.language.iso | en | en |
dc.relation.ispartofseries | Chemical Science; | |
dc.relation.ispartofseries | 6; | |
dc.relation.ispartofseries | 12; | |
dc.rights | Y | en |
dc.subject | conjugated polymer-di-ureasil organic – inorganic composites | en |
dc.title | Synergistic photoluminescence enhancement in conjugated polymer-di-ureasil organic-inorganic composites | en |
dc.type | Journal Article | en |
dc.type.supercollection | scholarly_publications | en |
dc.type.supercollection | refereed_publications | en |
dc.identifier.peoplefinderurl | http://people.tcd.ie/raevans | |
dc.identifier.rssinternalid | 108601 | |
dc.identifier.doi | http://dx.doi.org/10.1039/c5sc02409a | |
dc.rights.ecaccessrights | openAccess | |