单壁碳纳米管的共价侧墙功能化
Rajesh K Saini1, Ivana W Chiang, Haiqing Peng
1Center for Nanoscale Science and Technology, Rice Quantum Institute, Department of Chemistry, Rice University, Houston, Texas 77005, USA.
Journal of the American Chemical Society
|March 20, 2003
概括
基组可以使用基试剂连接到纳米管. 直径较小的纳米管更容易功能化,这种化在500°C时是可逆的.
科学领域:
- 材料科学 材料科学 材料科学
- 纳米技术纳米技术
- 有机化学 有机化学
背景情况:
- 碳纳米管的功能化对于定制它们的特性至关重要.
- 基试剂为化单壁碳纳米管 (SWNTs) 的侧壁修改提供了一条途径.
研究的目的:
- 量化测量化SWNT的化程度.
- 通过不同的方法制备的SWNT的化效率进行比较.
- 为了研究化过程的热稳定性和可逆性.
主要方法:
- 使用基试剂化SWNTs的化.
- 热重力测量分析 (TGA) 与UV对NIR光谱相结合,用于定量功能化评估.
- 在阿贡大气中进行热解,然后进行TGA-质谱 (TGA-MS) 分析.
主要成果:
- 使用TGA-UV-vs-NIR.实现了侧墙化程度的定量测量.
- 通过HiPco方法生产的SWNT与激光炉生产的SWNT相比,显示出更高的化效率.
- 已经证明了化的可逆性,在阿贡中加热至500°C后,原始的SWNT光谱签名得到恢复.
- 对n-butan化SWNT的TGA-MS分析确定了1-butan和n-butan作为热解产物.
结论:
- 基试剂有效地功能化SWNT侧墙.
- 直径较小的SWNT,例如HiPco的SWNT,更容易化.
- 化过程在热学上是可逆的,允许原始SWNT属性的潜在再生.
- 了解脱基化产品可以了解功能化的稳定性.
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