一种基于分子电荷转移的单壁碳纳米管分离金属和半导体的简单方法
Rakesh Voggu1, K Venkata Rao, Subi J George
1Chemistry and Physics of Materials Unit, Jawaharlal Nehru Centre for Advanced Scientific Research, Jakkur P. O., Bangalore 560 064, India.
Journal of the American Chemical Society
|April 6, 2010
概括
本研究介绍了一种简单的水性方法,使用冠四碳酸来分离金属和半导体单壁碳纳米管 (SWNT). 金属SWNT沉,而半导体SWNT保持可溶性,使大规模的分离.
科学领域:
- 材料科学 材料科学 材料科学
- 纳米技术 纳米技术
- 化学 化学 化学
背景情况:
- 单壁碳纳米管 (SWNTs) 存在于金属和半导体物种的混合物.
- 分离这些物种对于开发基于SWNT的电子设备至关重要.
- 目前的分离方法可能很复杂,难以扩展.
研究的目的:
- 开发一种简单,可扩展的方法来分离金属和半导体SWNT.
- 为了研究SWNTs和冠四碳酸盐之间的相互作用.
- 探索在SWNT中诱导金属半导体过渡的潜力.
主要方法:
- 在水性介质中使用冠四碳酸 (I) 的盐.
- 观察金属SWNT在与I.I.相互作用时的沉情况.
- 在I的存在下分析半导体SWNT的可溶性.
主要成果:
- 实现了金属和半导体SWNT的简单的水基分离.
- 金属SWNT选择性沉,而半导体SWNT则保持在溶液中.
- 该方法适用于大规模生产和常规实验室使用,避免离心.
结论:
- 冠四碳酸为分离金属和半导体SWNT提供了有效的剂量.
- 这种方法为SWNT净化提供了可扩展和实用的方法.
- 与强电子受体的相互作用可能会诱导SWNT中的金属半导体过渡.
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