基于四重结合的Mo-Mo二元体的分子架构的联结桥梁角度驱动组件
Jian-Rong Li1, Andrey A Yakovenko, Weigang Lu
1Department of Chemistry, Texas A&M University, P.O. Box 30012, College Station, Texas 77842-3012, USA.
Journal of the American Chemical Society
|November 19, 2010
概括
研究人员探索了刚性有机链接器如何控制基于的分子架构的组装. 通过调整连接器的角度和尺寸,他们精确地塑造了金属有机多面体和多面体,以满足潜在的电子应用.
科学领域:
- 超分子化学 超分子化学
- 协调化学 协调化学
- 材料科学 材料科学 材料科学
背景情况:
- 金属有机框架 (MOF) 和协调聚合物提供可调节的特性.
- 四重结合的二聚 (Mo2) 集群是多用途的构建块.
- 控制金属有机组件的几何结构对于目标应用至关重要.
研究的目的:
- 系统地研究基于Mo2(O2C-) 4的分子架构的组装.
- 了解不同尺寸和桥梁角度的刚性有机连接器如何影响最终结构.
- 探索这些组件在气体吸附,光谱和电化学方面的潜力.
主要方法:
- 设计和合成12个桥接二碳酸盐连接体,具有特定的桥接角度 (0, 60, 90, 120°) 和尺寸.
- 这些配体与四重结合的Mo-Mo集群组合在一起,形成金属有机多边形/多面体.
- 使用单晶X射线衍射的结构确定.
- 预先气体吸附,光谱和电化学性质的表征.
主要成果:
- 成功合成了13种不同的分子结构 (金属有机多面体/多面体).
- 证明了连接器桥梁角度和尺寸决定了产生的组件的形状和尺寸.
- 显示链接器功能化会影响溶解度,但不会影响整体几何.
- 观察到各种结构图案,包括Mo-Mo节点的线性,三角形,八面体和立方体排列.
结论:
- 基于Mo2的分子架构的几何结构可以通过链接器设计精确地控制.
- 功能化的连接器可以在不损害结构完整性的情况下调整溶解度.
- 将Mo-Mo单元纳入超分子化学中,为增强电子功能和新型材料特性开辟了道路.
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