Near-infrared/visible-emitting nanosilica modified with silylated Ru(II) and Ln(III) complexes - Archive ouverte HAL Accéder directement au contenu
Article Dans Une Revue Nanotechnology Année : 2019

Near-infrared/visible-emitting nanosilica modified with silylated Ru(II) and Ln(III) complexes

Résumé

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.
Fichier principal
Vignette du fichier
Sabio_27428.pdf (1.67 Mo) Télécharger le fichier
Origine : Fichiers produits par l'(les) auteur(s)

Dates et versions

hal-03153191 , version 1 (26-02-2021)

Identifiants

Citer

Rafael Miguel Sábio, Silvia Helena Santagneli, Marie Gressier, José Maurício Almeida Caiut, Wallance Moreira Pazin, et al.. Near-infrared/visible-emitting nanosilica modified with silylated Ru(II) and Ln(III) complexes. Nanotechnology, 2019, 31 (3), pp.035602. ⟨10.1088/1361-6528/ab494f⟩. ⟨hal-03153191⟩
14 Consultations
38 Téléchargements

Altmetric

Partager

Gmail Facebook X LinkedIn More