Extraordinary Sensitivity of the Electronic Structure and Properties of Single-Walled Carbon Nanotubes to Molecular Charge-Transfer

Author

• Rakesh Voggu, Chemistry and Physics of Materials Unit, Jawaharlal Nehru Centre for AdVanced Scientific Research,
• Chandra S. Rout, Chemistry and Physics of Materials Unit, Jawaharlal Nehru Centre for AdVanced Scientific Research
• Aaron D. Franklin, Birck Nanotechnology Center and School of Electrical and Computer Engineering, Purdue UniversityFollow
• Timothy Fisher, Birck Nanotechnology Center, Purdue UniversityFollow
• C. N. R. Rao, Jawaharlal Nehru Centre for Advanced Scientific Research

Abstract

Interaction of single-walled carbon nanotubes with electron-donor and -acceptor molecules causes significant changes in the electronic and Raman spectra. Electron-donating molecules such as tetrathiafulvalene and aniline cause changes opposite to those caused by electron-withdrawing molecules such as nitrobenzene and tetracyanoethylene. Thus, a proportion of the semiconducting SWNTs becomes metallic on electron donation through molecular charge transfer. Electrical resistivity measurements reveal a systematic variation with electron-donating or -withdrawing power of the interacting molecules.

Date of this Version

8-5-2008

Recommended Citation

Voggu, Rakesh; Rout, Chandra S.; Franklin, Aaron D.; Fisher, Timothy; and Rao, C. N. R., "Extraordinary Sensitivity of the Electronic Structure and Properties of Single-Walled Carbon Nanotubes to Molecular Charge-Transfer" (2008). Birck and NCN Publications. Paper 94.
https://docs.lib.purdue.edu/nanopub/94