Carbon Nanotube-Based Electrochemical Sensors: Principles and Applications in Biomedical Systems
Figure 2
Decomposition of oxygen related functionalities on o-SWNTs. Transmission IR spectra of o-SWNTs following heating in vacuum to the indicated temperatures. The spectra indicate that carboxylic acid and quinone groups are thermally destroyed in vacuum above about 600 K. Other unassigned surface functionalities are also observed to disappear upon heating. Removal of these functionalities reveals the IR transition associated with a 1580 cm-1 phonon mode of nanotubes. [Adapted with permission from Kuznetsova et al. [18], Chem. Phys. Lett. , 321, 292 (2000). Copyright 2000, Elsevier Science.]
