(291l) Preparation of Individually Dispersed Single-Walled Carbon Nanotube-Protein Conjugates

Karajanagi, S. S. - Presenter, Rensselaer Polytechnic Institute
Asuri, P., Rensselaer Polytechnic Institute
Kane, R. S., Rensselaer Polytechnic Institute
Dordick, J. S., Rensselaer Polytechnic Institute

Solubilization and functionalization of carbon nanotubes without compromising their excellent physicochemical properties is a challenge that needs to be addressed for realizing many applications of carbon nanotubes. Here we report the design of individually dispersed single-walled carbon nanotube-protein conjugates in aqueous solutions. The conjugates were characterized using absorption spectroscopy, atomic force microscopy, and Raman spectroscopy. Spectroscopy and atomic force microscopy revealed the presence of protein-functionalized, individually dispersed SWNTs in water. Furthermore, the proteins immobilized onto the SWNTs also retained their bioactivity. Applications of these water-soluble SWNT-protein conjugates will also be discussed.