Optical properties of hybrid T3Pyr/SiO2/3C-SiC nanowires
1 IMEM-CNR Institute, Parco Area delle Scienze 37/A, Parma, 43124, Italy
2 ISOF-CNR Institute, via P. Gobetti, 101, Bologna, 40129, Italy
Nanoscale Research Letters 2012, 7:680 doi:10.1186/1556-276X-7-680Published: 17 December 2012
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.