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

F. Fabbri,F. Rossi,M. Melucci,I. Manet,G. Attolini,L. Favaretto,M. Zambianchi,G. Salviati

Published 2012 in Nanoscale Research Letters

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.

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