Title
Dispersion of carbon nanotubes by single-stranded DNA wrapping for advanced biomedical applications
Author
S Simon, A R Biris, D M Lupu, I Misan, S Clichici, T Mocan and A S Biris
Year
2009
Journal
Journal of Physics: Conference Series
Abstract
Carbon nanotubes (CNT) are novel materials with unique electrical, thermal, and structural proprieties, which make them attractive for applications in composites, medicine, biology, electronics, and energy management. There are more and more attempts to use CNT, especially single-walled carbon nanotubes (SWNT), in various biomedical applications, which require highly purified samples, with no contents of catalyst residual metal particles, good dispersion in an aqueous solution at relatively high concentrations. This report presents all these three main requirements as proved by Raman spectroscopy, UV-Vis-NIR spectroscopy and thermogravimetrical analysis. The maximum achieved concentration of SWNTs dispersed in water when wrapped with single-stranded DNA (ss-DNA) was of 400 mg/l.
Instrument
NRS-3300, V-570 UV-Vis-NIR
Keywords
Raman Imaging Microscopy, Carbon nanotube, DNA, biomedical, in vivo, in vitro