使用离子和表面活性剂对石素化纳米颗粒进行剧烈的结构转化
Masaki Saruyama1, Masayuki Kanehara, Toshiharu Teranishi
1Department of Chemistry, Graduate School of Pure and Applied Sciences, University of Tsukuba, 1-1-1 Tennodai, Tsukuba, Ibaraki 305-8571, Japan.
Journal of the American Chemical Society
|February 25, 2010
概括
我们发现了一种简单的方法,使用离子和表面活性剂将小的石化 (CdE) 纳米粒子转化为大,笔形的纳米粒子. 这种受控的结构转变是有效的创建多种功能材料.
科学领域:
- 纳米技术纳米技术
- 材料科学 材料科学 材料科学
- 无机化学 无机化学
背景情况:
- 疏水性小型石化 (CdE) 纳米颗粒通常需要对特定应用进行受控生长.
- 奥斯瓦尔德成熟是纳米粒子尺寸和形状进化的已知机制.
研究的目的:
- 开发一种简单的方法,使小CdE纳米粒子的结构转化为更大,更高质量的笔形结构.
- 研究阴离子和表面活性剂在纳米粒子转化中的作用.
- 通过这种方法探索创造各种功能性材料的潜力.
主要方法:
- 使用奥斯瓦尔德的成熟工艺.
- 诱导与离子 (Cl(-)) 和诸如油酸和烯胺之类的表面活性剂的转化.
- 研究硫化 (CdS),化 (CdSe) 和化 (CdTe) 的纳米粒子.
主要成果:
- 从小的疏水性CdE纳米颗粒到大,高质量的笔形纳米颗粒实现了剧烈的结构转变.
- 确定离子 (Cl(-)) 作为控制结构转换的关键有效离子.
- 证明了各种功能性材料的转化反应的多功能性.
结论:
- 已经建立了一种独特且简单的纳米粒子结构转换方法.
- 离子对于控制CdE纳米颗粒中Ostwald成熟过程至关重要.
- 开发的方法为合成多种功能纳米材料提供了一条途径.
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