Titre :

Preparation and Characterization of Decyl-Terminated Silicon Nanoparticles Encapsulated in Lipid Nanocapsules

Auteur(s) :

Pan, Guo-Hui [Auteur]
Institut de Recherche Interdisciplinaire [Villeneuve d'Ascq] [IRI]
Barras, Alexandre [Auteur]
Institut de Recherche Interdisciplinaire [Villeneuve d'Ascq] [IRI]
Boussekey, Luc [Auteur]
Laboratoire de Spectrochimie et Raman (LASIR) - UMR 8516
Qu, Xuesong [Auteur]
Changchun University of Science and Technology
Addad, Ahmed [Auteur]
Unité Matériaux et Transformations (UMET) - UMR 8207
Boukherroub, Rabah [Auteur]
Institut de Recherche Interdisciplinaire [Villeneuve d'Ascq] [IRI]

Titre de la revue :

Langmuir

Numéro :

29

Pagination :

12688-12696

Date de publication :

2013-09-09

Discipline(s) HAL :

Chimie/Chimie théorique et/ou physique

Résumé en anglais : [en]

In this Article, we report on the encapsulation of decyl-modified silicon nanoparticles (decyl-SiNPs) into ∼80 nm lipid nanocapsules (LNCs). The decyl-SiNPs were produced by thermal hydrosilylation of hydride-terminated ...
Lire la suite >In this Article, we report on the encapsulation of decyl-modified silicon nanoparticles (decyl-SiNPs) into ∼80 nm lipid nanocapsules (LNCs). The decyl-SiNPs were produced by thermal hydrosilylation of hydride-terminated SiNPs (H-SiNPs) liberated from porous silicon. Various techniques, including Fourier transform infrared spectroscopy (FT-IR), transmission electron microscopy (TEM), UV-vis absorption, dynamic light scattering (DLS), and photoluminescence (PL), were used to characterize their size, shape, colloidal, and optical properties. The results indicate that these nanocapsules feature controllable size, good dispersity, high loading rate of SiNPs, colloidal stability in various media, and bright PL. The PL of decyl-SiNPs loaded LNCs was stable upon heating to 80 C, but was sensitive to basic solutions due to proton-gated emission of the SiNPs arranged at the LNCs interface between the oil phase and the hydrophilic polyethylene glycol moieties of the surfactant. These luminescent nanocapsules are therefore promising candidates as cellular probes for fluorescence imaging. In addition, it was found that TEM imaging of small-sized decyl-SiNPs could be greatly improved by preliminary negative staining of TEM grids with phosphotungstic acid.Lire moins >

Langue :

Anglais

Audience :

Internationale

Vulgarisation :

Non

Établissement(s) :

Université de Lille
ISEN
Univ. Valenciennes
ENSCL
CNRS
INRA
Institut Catholique Lille
Centrale Lille

Collections :

• Institut d'Électronique, de Microélectronique et de Nanotechnologie (IEMN) - UMR 8520
• Laboratoire Avancé de Spectroscopie pour les Intéractions la Réactivité et l'Environnement (LASIRE) - UMR 8516
• Unité Matériaux et Transformations (UMET) - UMR 8207

Date de dépôt :

2019-05-16T16:01:21Z
2021-10-08T13:11:28Z