naa a22 4500 510815898 CHVBK 20180411083507.0 cr unu---uuuuu 180411e20130301xx s 000 0 eng 10.1007/s11468-012-9425-6 doi (NATIONALLICENCE)springer-10.1007/s11468-012-9425-6 Fluorescent (AuSiO2)SiC Nanohybrids: Influence of Gold Nanoparticle Diameter and SiC Nanoparticle Surface Density [Elektronische Daten] [Ning Sui, Virginie Monnier, Yuriy Zakharko, Yann Chevolot, Sergei Alekseev, Jean-Marie Bluet, Vladimir Lysenko, Eliane Souteyrand] Gold@silica core-shell nanoparticles were prepared with various gold core diameters (ranging from 20 to 150nm) and silica thicknesses (ranging from 10 to 30nm). When the gold diameter is increased, the size dispersion became larger, leading to a broader plasmon band. Then, silicon carbide (SiC) nanoparticles were covalently immobilized onto silica to obtain hybrid (Au@SiO2) SiC nanoparticles. The absorption properties of these hybrid nanoparticles showed that an excess of SiC nanoparticles in the dispersion can be identified by a strong absorption in the UV region. Compared to SiC reference samples, a blue shift of the fluorescence emission, from 582 to 523nm, was observed, which was previously attributed to the strong surface modification of SiC when immobilized onto silica. Finally, the influence of several elaboration parameters (gold diameter, silica thickness, SiC concentration) on fluorescence enhancement was investigated. It showed that the highest enhancements were obtained with 10nm silica thickness, low concentration of SiC nanoparticles, and surprisingly, with a 20-nm gold core diameter. This last result could be attributed to the broad plasmon band of big gold colloids. In this case, SiC emission strongly overlapped gold absorption, leading to possible quenching of SiC fluorescence by energy transfer. Springer Science+Business Media, LLC, 2012 Fluorescence nationallicence Plasmon nationallicence Hybrid nationallicence Enhancement nationallicence Silicon carbide nationallicence Sui Ning Institut des Nanotechnologies de Lyon—INL, UMR CNRS 5270, Site Ecole Centrale de Lyon, Université de Lyon, 36 Avenue Guy de Collongue, 69134, Ecully, Cedex, France aut Monnier Virginie Institut des Nanotechnologies de Lyon—INL, UMR CNRS 5270, Site Ecole Centrale de Lyon, Université de Lyon, 36 Avenue Guy de Collongue, 69134, Ecully, Cedex, France aut Zakharko Yuriy Institut des Nanotechnologies de Lyon—INL, UMR CNRS 5270, Site INSA Lyon, Université de Lyon, 7 Avenue Jean Capelle, 69621, Villeurbanne Cedex, France aut Chevolot Yann Institut des Nanotechnologies de Lyon—INL, UMR CNRS 5270, Site Ecole Centrale de Lyon, Université de Lyon, 36 Avenue Guy de Collongue, 69134, Ecully, Cedex, France aut Alekseev Sergei Faculty of Chemistry, Kiev National Taras Schevchenko University, 64 Vladimirskaya St., 01601, Kiev, Ukraine aut Bluet Jean-Marie Institut des Nanotechnologies de Lyon—INL, UMR CNRS 5270, Site INSA Lyon, Université de Lyon, 7 Avenue Jean Capelle, 69621, Villeurbanne Cedex, France aut Lysenko Vladimir Institut des Nanotechnologies de Lyon—INL, UMR CNRS 5270, Site INSA Lyon, Université de Lyon, 7 Avenue Jean Capelle, 69621, Villeurbanne Cedex, France aut Souteyrand Eliane Institut des Nanotechnologies de Lyon—INL, UMR CNRS 5270, Site Ecole Centrale de Lyon, Université de Lyon, 36 Avenue Guy de Collongue, 69134, Ecully, Cedex, France aut Plasmonics Springer US; http://www.springer-ny.com 8/1(2013-03-01), 85-92 1557-1955 8:1<85 2013 8 11468 https://doi.org/10.1007/s11468-012-9425-6 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s11468-012-9425-6 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Sui Ning Institut des Nanotechnologies de Lyon—INL, UMR CNRS 5270, Site Ecole Centrale de Lyon, Université de Lyon, 36 Avenue Guy de Collongue, 69134, Ecully, Cedex, France aut NATIONALLICENCE 700 1- Monnier Virginie Institut des Nanotechnologies de Lyon—INL, UMR CNRS 5270, Site Ecole Centrale de Lyon, Université de Lyon, 36 Avenue Guy de Collongue, 69134, Ecully, Cedex, France aut NATIONALLICENCE 700 1- Zakharko Yuriy Institut des Nanotechnologies de Lyon—INL, UMR CNRS 5270, Site INSA Lyon, Université de Lyon, 7 Avenue Jean Capelle, 69621, Villeurbanne Cedex, France aut NATIONALLICENCE 700 1- Chevolot Yann Institut des Nanotechnologies de Lyon—INL, UMR CNRS 5270, Site Ecole Centrale de Lyon, Université de Lyon, 36 Avenue Guy de Collongue, 69134, Ecully, Cedex, France aut NATIONALLICENCE 700 1- Alekseev Sergei Faculty of Chemistry, Kiev National Taras Schevchenko University, 64 Vladimirskaya St., 01601, Kiev, Ukraine aut NATIONALLICENCE 700 1- Bluet Jean-Marie Institut des Nanotechnologies de Lyon—INL, UMR CNRS 5270, Site INSA Lyon, Université de Lyon, 7 Avenue Jean Capelle, 69621, Villeurbanne Cedex, France aut NATIONALLICENCE 700 1- Lysenko Vladimir Institut des Nanotechnologies de Lyon—INL, UMR CNRS 5270, Site INSA Lyon, Université de Lyon, 7 Avenue Jean Capelle, 69621, Villeurbanne Cedex, France aut NATIONALLICENCE 700 1- Souteyrand Eliane Institut des Nanotechnologies de Lyon—INL, UMR CNRS 5270, Site Ecole Centrale de Lyon, Université de Lyon, 36 Avenue Guy de Collongue, 69134, Ecully, Cedex, France aut NATIONALLICENCE 773 0- Plasmonics Springer US; http://www.springer-ny.com 8/1(2013-03-01), 85-92 1557-1955 8:1<85 2013 8 11468 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer