Aggregation-induced heterogeneities in the emission of upconverting nanoparticles at the submicron scale unfolded by hyperspectral microscopy
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Otros documentos de la autoría: Gonell, Francisco; Botas, Alexandre M. P.; Brites, Carlos B. S.; Amorós, Pedro; Carlos, Luis D.; Julian-Lopez, Beatriz; Ferreira, Rute A. S.
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Título
Aggregation-induced heterogeneities in the emission of upconverting nanoparticles at the submicron scale unfolded by hyperspectral microscopyAutoría
Fecha de publicación
2019Editor
Royal Society of ChemistryISSN
2516-0230Cita bibliográfica
Nanoscale Adv., 2019, 1, 2537Tipo de documento
info:eu-repo/semantics/articleVersión de la editorial
https://pubs.rsc.org/en/content/articlelanding/2019/na/c8na00412a#!divAbstractVersión
info:eu-repo/semantics/publishedVersionResumen
Transparent upconverting hybrid nanocomposites are exciting materials for advanced applications such as
3D displays, nanosensors, solar energy converters, and fluorescence biomarkers. This work presents
a simple ... [+]
Transparent upconverting hybrid nanocomposites are exciting materials for advanced applications such as
3D displays, nanosensors, solar energy converters, and fluorescence biomarkers. This work presents
a simple strategy to disperse upconverting b-NaYF4:Yb3+/Er3+ or Tm3+ nanoparticles into low cost,
widely used and easy-to-process polydimethylsiloxane (PDMS)-based organic–inorganic hybrids. The
upconverting hybrids were shaped as monoliths, films or powders displaying in the whole volume Tm3+
or Er3+ emissions (in the violet/blue and green/red spectral regions, respectively). For the first time,
hyperspectral microscopy allows the identification at the submicron scale of differences in the hybrids'
emission colour, due to variations in the relative intensity of the distinct components of the
upconversion spectrum. The effect is attributed to the size distribution of the agglomerates of
nanoparticles, highlighting the importance of studying the emission at submicron scales, since this effect
is not observable in measurements recorded in larger areas. [-]
Publicado en
Nanoscale Adv., 2019, 1Proyecto de investigación
POCI-01-0145-FEDER007679 (FCT Ref. UID/CTM/50011/2019); MAT2015-64139-C4-2-R; UJI-B2018-71; E92 PRI-AIBPT2011-1010; CENTRO-01-0145-FEDER-000005; E92 PRI-AIBPT2011-1010; MAT2011-27008Derechos de acceso
Licencia CC-BY-NC
info:eu-repo/semantics/openAccess
info:eu-repo/semantics/openAccess
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