由金属协调和静电相互作用驱动的多氧金属酸盐基混合物的等级自组:从离散的超分子物种到密集的单分散纳米粒子
Guillaume Izzet1, Benjamin Abécassis2, Dalil Brouri3
1Sorbonne Universités, UPMC Université Paris 06, CNRS UMR 8232, Institut Parisien de Chimie Moléculaire, Université Pierre et Marie Curie , 4 Place Jussieu, F-75005 Paris, France.
Journal of the American Chemical Society
|March 29, 2016
概括
研究人员探索了基于多氧金属 (POM) 的混合体的金属驱动自组装. 它们在一个溶剂中形成了离散的分子三角形,在另一个溶剂中形成了可逆的纳米粒子组合,为控制的POM结构铺平了道路.
科学领域:
- 超分子化学
- 材料科学
- 纳米技术
背景情况:
- 聚氧金属酸盐 (POM) 是具有可调节性质的多功能无机.
- 金属导向的自组装为构建复杂的超分子架构提供了途径.
- 控制POM的层次组合对于开发高级功能材料至关重要.
研究的目的:
- 研究一种基于共价聚氧甲 (POM) 的混合体的金属驱动自组装.
- 探索溶剂特性如何影响自组装过程和由此产生的结构.
- 了解金属协调和静电相互作用在等级组织中的作用.
主要方法:
- 合成基于POM的混合物与远程特皮里丁结合点.
- 使用二维扩散NMR光谱 (DOSY),小角度X射线散射 (SAXS) 和分子建模进行表征.
- 传输电子显微镜 (TEM) 用于纳米粒子分析.
主要成果:
- 在强解离溶剂中形成离散的金属大环 (分子三角).
- 可逆自组装成密集的单分散纳米粒子 (大约. 通过分子间静电相互作用在较少分离的溶剂中.
- 由金属协调和静电力驱动的多尺度组织的演示.
结论:
- 这项研究成功地证明了基于溶剂极性的POM基混合体的可调自组装.
- 分层组装成纳米粒子突出了控制的纳米级材料设计的潜力.
- 这项工作在设计具有可控制结构指导因素的POM自组件方面取得了重大进展.
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