Magnetic and optical properties of Ag@SiO2-FITC-Fe3O4 hybrid nanoparticles.

作者：Sui, Ning; Monnier, Virginie^*; Salvia, Marie-Virginie; Chevolot, Yann; Souteyrand, Eliane

来源：Materials Science and Engineering B-Solid State Materials for Advanced Technology, 2014, 182: 92-95.

DOI：10.1016/j.mseb.2013.11.029

• Metal-enhanced fluorescence
• Nanoparticles
• Fluorescence
• Plasmon
• Magnetism

Nanoparticles composed of a silver core coated with a silica shell (Ag@SiO2) were prepared. A dye, fluorescein isothiocyanate (FITC), was further encapsulated during the growth of a second silica shell onto Ag@SiO2 nanoparticles. The proximity of silver nanoparticles led to a 4-fold maximal enhancement in the fluorescence of FITC when the first silica shell thickness was set at 5 nm. After amino-functionalization of Ag@SiO2-FITC nanoparticles, iron oxide nanoparticles were bonded to their surface. The magnetic and metal-enhanced fluorescence properties appeared simultaneously when Ag@SiO2-FITC-Fe3O4 hybrid nanoparticles were dispersed in a solution.

• 出版日期2014-3
• 单位青岛科技大学