Photoluminescent Epoxy/Gd2O3:Eu3+ UV-cured Nanocomposites

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abstract

UV-cured photoluminescent coatings emitting in the visible spectral region are obtained by dispersing Gd2O3:4 mol% Eu3+ nanorods in three different commercially available photocurable epoxy resins. The effect of the concentration of the Gd2O3:4 mol% Eu3+ nanorods on the kinetics of the photocuring reaction is followed using real-time FT-IR. Thermal and the mechanical properties of the cured films are also investigated. Moreover, the effect of the matrix and nanorod concentration in the composites on the emission and excitation spectra and the D-5(0)(C-2) decay time of Eu3+ is evaluated. The composite materials present original photoluminescence properties and demonstrate the potential of UV curing as a technique to develop smart photoactive coatings.

keywords

LUMINESCENT HYBRID MATERIALS; IN-SITU POLYMERIZATION; COPPER IODIDE CLUSTERS; OPTICAL-PROPERTIES; ENERGY-TRANSFER; TRANSPARENT NANOCOMPOSITES; UP-CONVERSION; EU-3+ IONS; NANOPARTICLES; COMPLEXES

subject category

Materials Science; Polymer Science

authors

Roppolo, I; Debasu, ML; Ferreira, RAS; Rocha, J; Carlos, LD; Sangermano, M

our authors

foto João Rocha

João Rocha

Full Professor
foto Luís Carlos

Luís Carlos

Full professor
foto Maria Rute de Amorim e Sá Ferreira André

Maria Rute de Amorim e Sá Ferreira André

Full professor
foto Mengistie Leweyehu Debasu

Mengistie Leweyehu Debasu

Researcher

Groups

G1 - Porous Materials and Nanosystems
G2 - Photonic, Electronic and Magnetic Materials

Projects

Organic-inorganic hybrids with enhanced light-emitting properties for the new generation of optical communications (PTDC/CTM/101324/2008)

acknowledgements

We acknowledge the financial support from the Fundacao para a Ciencia e a Tecnologia (FCT, Portugal), COMPETE and FEDER programs (PTDC/CTM/101324/2008). The help of Dr. Duarte Ananias (University of Aveiro) in the synthesis of the pristine Gd2O3:Eu3+ nanorods is gratefully acknowledged.

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Publication Details

type
Journal Article
year
2013
journal
MACROMOLECULAR MATERIALS AND ENGINEERING
volume
298
publisher
WILEY-V C H VERLAG GMBH
issn
1438-7492
issue
2
digital object identifier
10.1002/mame.201200020
web of science article identifier
WOS:000314973900007

Journal Metrics (JCR 2019)

Journal Impact Factor
3.853
Journal Impact Factor (5 yrs)
3.368
category normalized journal percentile
76.488

Citations

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