2014年
Redox properties of a single (7,5) single-walled carbon nanotube determined by an in situ photoluminescence spectroelectrochemical method
NANOSCALE
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- 巻
- 6
- 号
- 21
- 開始ページ
- 12798
- 終了ページ
- 12804
- 記述言語
- 英語
- 掲載種別
- 研究論文(学術雑誌)
- DOI
- 10.1039/c4nr03945a
- 出版者・発行元
- ROYAL SOC CHEMISTRY
The determination of electronic states of single-walled carbon nanotubes (SWNTs) has been a central issue in science and nanotechnology of carbon nanotubes. We here describe the oxidation and reduction potentials of a single SWNT determined by in situ photoluminescence (PL) spectroelectrochemical measurements. By PL imaging and single SWNT PL spectroscopy, the stepwise quenching behavior of the PL from a single (7,5) SWNT was detected as the outer-applied potentials increased. Based on the analysis of the obtained potential-dependent PL plots using the Nernst equation, the oxidation and reduction potentials of the (7,5) tube are successfully determined as 0.41 V and -0.38 V vs. Ag/AgCl, respectively, which shift from those of the bulk (7,5) SWNTs. We further observed a PL blueshift and narrowing of the line width as the external-applied potential to the single SWNT increases. The present results are important for understanding the electronic properties of a single (n,m) SWNT and its applications.
- リンク情報
- ID情報
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- DOI : 10.1039/c4nr03945a
- ISSN : 2040-3364
- eISSN : 2040-3372
- Web of Science ID : WOS:000344997500072