Open Access Nano Express

Optical properties of hybrid T3Pyr/SiO2/3C-SiC nanowires

Filippo Fabbri1, Francesca Rossi1*, Manuela Melucci2, Ilse Manet2, Giovanni Attolini1, Laura Favaretto2, Massimo Zambianchi2 and Giancarlo Salviati1

Author Affiliations

1 IMEM-CNR Institute, Parco Area delle Scienze 37/A, Parma, 43124, Italy

2 ISOF-CNR Institute, via P. Gobetti, 101, Bologna, 40129, Italy

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Nanoscale Research Letters 2012, 7:680  doi:10.1186/1556-276X-7-680

Published: 17 December 2012

Abstract

A new class of nanostructured hybrid materials is developed by direct grafting of a model thiophene-based organic dye on the surface of 3C-SiC/SiO2 core/shell nanowires. TEM-EDX analysis reveals that the carbon distribution is more spread than it would be, considering only the SiC core size, suggesting a main contribution from C of the oligothiophene framework. Further, the sulfur signal found along the treated wires is not detected in the as-grown samples. In addition, the fluorescent spectra are similar for the functionalized nanostructures and T3Pyr in solution, confirming homogeneous molecule grafting on the nanowire surface. Chemical and luminescence characterizations confirm a homogeneous functionalization of the nanowires. In particular, the fluorophore retains its optical properties after functionalization.

Keywords:
Nanowires; Functionalization; Silicon carbide; Oligothiophene; Fluorescence; 81.07.Pr78.67.Uh