Stable Single-Walled Carbon Nanotube-Streptavidin Complex for Biorecognition

A novel method is described for preparing single walled carbon nanotube (SWNT)-streptavidin complexes via the biotin-streptavidin recognition. The complex shows stability in 18 days, strong biotin recognition capability, and excellent loading capacity (about I streptavidin tetramer per 20 nm of SWNT). capturing biotinylated DNA, fluorophores, and Au nanoparticles (NPs) on the SWNT-streptavidin complexes demonstrates their usefulness as a docking matrix, for instance for electron microscopy Studies, a technique requiring if virtually electron transparent Support.