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Metal-to-Insulating Transition of Single Polyaniline (PANI) Nanowire: A Dedoping Effect
- Issue Date
- Jul-2010
- Publisher
- AMER CHEMICAL SOC
- Citation
- JOURNAL OF PHYSICAL CHEMISTRY C, v.114, no.27, pp 11936 - 11939
- Pages
- 4
- Journal Title
- JOURNAL OF PHYSICAL CHEMISTRY C
- Volume
- 114
- Number
- 27
- Start Page
- 11936
- End Page
- 11939
- ISSN
- 1932-7447
1932-7455
- Abstract
- We consider the metal-to-insulating transition on the electrical and optical characteristics of a single polyaniline (PANI) nanowire that was synthesized by nanochannel-assisted chemical oxidative polymerization. After treatment with a solution at pH 2, the conductivity of the PANI nanowire decreased to similar to 0.95 S/cm, which was similar to 1.3 times lower than that of an as-synthesized PANI nanowire at room temperature. We examined this dedoping effect (M-I transition) by studying low-temperature current-voltage characteristics and micro-Raman spectroscopy characteristics.
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