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从环在环到球在球:自组装离散的2D和3D架构,增加稳定性

Bin Sun¹, Ming Wang, Zhichao Lou

¹Shanghai Key Laboratory of Green Chemistry and Chemical Processes, Department of Chemistry, East China Normal University , Shanghai 200062, China.

Journal of the American Chemical Society

|January 10, 2015

概括

研究人员使用四型连接体设计了稳定的2D环在环和3D球在球的超分子组件. 高密度的协调站点 (DOCS) 增强了结构完整性和稳定性,导致有序的纳米结构和金属凝.

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:

增加协调点密度 (DOCS) 是提高自组装结构稳定性的策略.
与复杂架构的二极管联体相比,多极管联体提供了更大的几何控制.

研究的目的:

设计和自组装具有增强稳定性的离散2D和3D超分子架构.
研究DOCS与自组合金属超分子结构的稳定性之间的关系.

主要方法:

设计和合成一个以四基基基的连接物.
使用Pt{\displaystyle Pt{\displaystyle Pt{\displaystyle Pt{\text{II}}) 的二维环在环的自组装和使用Pd{\text{\text{II}}) 的三维球在球的自组装.
使用多核核核磁共振,二维核磁共振,DOSY,质谱,TEM和AFM进行全面的结构特征.

主要成果:

成功合成了具有高稳定的离散的2D环在环和3D球在球架构.
证明了来自多位基联体的高DOCS为稳定,离散的结构提供了几何约束.
建议DOCS的定量定义与组件稳定性相关联.
观察到环在环的等级自组装成有序的纳米结构和金属凝.

结论:

具有刚性脊椎的多拓连接体使巨型超分子架构的精确预组织和高结构完整性成为可能.
拟议的定量DOCS指标与组件稳定性有效相关.
层次的自我组装导致先进的超分子材料的形成,如金属凝.

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