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Spatial Separation of Molecular Conformers and Clusters
Published on: January 9, 2014
富勒在极性有机溶剂中的稳定合分散
R G Alargova1, S Deguchi, K Tsujii
1DEEPSTAR Group, Japan Marine Science and Technology Center, 2-15 Natsushima-cho, Yokosuka 237-0061, Japan. rossitza@jamstec.go.jp
Journal of the American Chemical Society
|October 25, 2001
概括
在没有稳定剂的情况下,C60和C70富勒烯的稳定合分散很容易制备. 颗粒大小因富勒烯类型和度而异,表明控制的纳米颗粒合成的潜力.
科学领域:
- 材料科学 材料科学 材料科学
- 纳米技术 纳米技术
- 物理化学 物理化学
背景情况:
- 富勒 (C60和C70) 是具有独特电子和光学特性的碳类.
- 稳定的富勒烯纳米颗粒的受控合成对于它们的应用至关重要.
- 现有的烯分散方法可能很复杂,需要稳定剂.
研究的目的:
- 开发一种简单快速的方法来制备C60和C70富勒的稳定合分散.
- 调查影响富勒烯纳米粒子形成和性质的因素.
- 描述合成的富勒烯合体的稳定性和结构特征.
主要方法:
- 通过将富勒烯溶液与极性较弱的有机溶剂混合来制备富勒烯分散剂.
- 动态光散射 (DLS) 用于确定粒子大小分布.
- 高分辨率传输电子显微镜 (HRTEM) 用于可视化粒子形态和结构.
- 电泳性移动性测量以评估体稳定性.
主要成果:
- 在没有稳定剂的情况下,成功和快速形成合式富勒烯颗粒 (C60,C70和混合物).
- 在极性有机溶剂中观察到的长期体稳定性.
- 对C60,C70及其混合物而言,尺寸分布狭窄,平均颗粒大小明显.
- 通过降低烯度实现更小的颗粒大小.
- 对于富勒烯颗粒的晶体结构得到证实.
- 负电泳流动性表明静电稳定.
结论:
- 已经建立了一种生产稳定的富勒烯合体的简单方法.
- 颗粒大小可以通过调整烯度和成分来调整.
- 排斥性静电相互作用在稳定这些富勒烯分散中发挥着关键作用.
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