Sábio, Rafael Miguel and Santagneli, Silvia Helena and Gressier, Marie
and Caiut, José Maurício Almeida and Pazin, Wallance Moreira and Ribeiro, Sidney José Lima and Menu, Marie-Joëlle
Near-infrared/visible-emitting nanosilica modified with silylated Ru(II) and Ln(III) complexes.
(2019)
Nanotechnology, 31 (3). 035602. ISSN 0957-4484
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(Document in English)
PDF (Author's version) - Requires a PDF viewer such as GSview, Xpdf or Adobe Acrobat Reader 1MB |
Official URL: https://doi.org/10.1088/1361-6528/ab494f
Abstract
Three luminescent silica-based nanohybrids were fabricated by grafting of silylated Ru(II)andNd/Yb(III)complexes onto mesoporous silica nanoparticles obtained by microemulsion method.The prepared nanohybrids were characterized by Fourier transform-Raman spectroscopy, solidstate-nuclear magnetic resonance, high resolution-transmission electron microscopy andscanning and transmission electron microscopy techniques. The chemical integrity and thegrafting of all complexes inside MSNs nanopores as well as a good distribution of metalcomplexes onto MSNs surface were achieved for all nanohybrids. Photophysical results revealedthat by monitoring the excitation on Ru(II)moieties from SiO2–RuNd and SiO2–RuYb nanohybrids, the sensitization of NIR-emitting Nd/Yb(III)ions were successfully detected viaenergy transfer processes. Energy transfer rates(kEnT)of 0.20×107and 0.11×107s−1 and efficiencies of energy transfer(ηEnT)of 40% and 27.5% were obtained for SiO2–RuNd and SiO2–RuYb nanohybrids, respectively. These results confirm the preparation of promising dual(near-infrared/visible)-emitting silica-based nanohybrids as new nanotools for applications asnanosensores and nanomarkers.
Item Type: | Article |
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HAL Id: | hal-03153191 |
Audience (journal): | International peer-reviewed journal |
Uncontrolled Keywords: | |
Institution: | French research institutions > Centre National de la Recherche Scientifique - CNRS (FRANCE) Université de Toulouse > Institut National Polytechnique de Toulouse - Toulouse INP (FRANCE) Other partners > Universidade Estadual Paulista - Unesp - Araraquara (BRAZIL) Université de Toulouse > Université Toulouse III - Paul Sabatier - UT3 (FRANCE) Other partners > Universidade de São Paulo - USP (BRAZIL) |
Laboratory name: | |
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Deposited On: | 26 Feb 2021 09:49 |
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