A functionalization method for the specific and selective immobilization of the streptavidin (SA) protein on semiconductor nanowires (NWs) was developed. Silicon (Si) and silicon carbide (SiC) NWs were functionalized with 3-aminopropyltriethoxysilane (APTES) and subsequently biotinylated for the conjugation of SA. Field-emission scanning electron microscopy (FESEM), X-ray photoelectron spectroscopy (XPS), high-resolution transmission electron microscopy (HRTEM), atomic force microscopy (AFM), and fluorescence microscopy were utilized to study each functionalization step on the Si and SiC NWs.
Citation: Journal of Materials Research
Pub Type: Journals
biosensor, nanowires, surface chemistry