Self-Assembly of Discrete and Infinite Nanoscale Supramolecular Assemblies via Metal Directed Coordination

通过金属定向配位自组装离散和无限纳米级超分子组装体

• 批准号: 0306720
• 负责人: Peter Stang
• 金额: $ 57.2万
• 依托单位: University of Utah
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 2003
• 资助国家: 美国
• 起止时间: 2003-08-01 至 2008-07-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0306720&HistoricalAwards=false
• 关键词: Self; Assembly; Discrete; Infinite; Nanoscale

The directional bonding paradigm parallels Nature's self-assembly strategy using hydrogen bonding, but takes advantage of the greater directionality and stronger bond strength of metal-ligand coordination. In combination with other weak interactions, such as pi-pi stacking, van der Waals and electrostatic forces, it allows for the assembly of two-dimensional and three-dimensional supramolecules with well defined shape and size of unprecedented variety and diversity. This project will take the directional bonding paradigm to the next level of complexity, incorporating carboranes, metal clusters, and liquid crystal forming units into supramolecular polygons and molecular cages, and will begin the exploration of the capabilities of these molecular cages to include guest molecules, including the fullerenes.As chemists have grown increasingly sophisticated in their ability to construct molecules of considerable size and complexity, they have turned their attention to the possibility of "self-assembly" of large multi-molecular aggregates, in which smaller molecular building blocks spontaneously assemble into more elaborate materials with defined shape and structure. Professor Peter J. Stang, of the Department of Chemistry at the University of Utah, is supported by the Organic and Macromolecular Chemistry Program for his studies of the self-assembly of nanoscale supramolecular assemblies through the use of coordination complexes of metals. Professor Stang has developed a general synthetic strategy for the construction of such assemblies, exploiting the defined geometries of metal coordination complexes to dictate the shape and structure of aggregates containing metal complexes as key building blocks. Through his studies, he is helping to define the power of self-assembly in the construction of unusual molecular architectures that may play central roles in the areas of nanoscale devices and molecular machinery. His research also serves as an effective vehicle for the education and technical training of undergraduate, graduate and postdoctoral students in the fundamentally and technologically important areas of chemical synthesis and supramolecular structure.

定向键合范式使用氢键合同自然的自组装策略，但利用了金属配体配位的更大方向性和更强的键强度。结合其他弱相互作用，例如PI-PI堆叠，范德华和静电力，它允许组装具有良好定义的形状和空前的多样性和多样性的二维和三维超分子。该项目将将定向键合的范式提升到更高的复杂程度，将卡顿人，金属簇和液晶形成单元纳入超分子多边形和分子笼中，并将开始探索这些分子笼的能力，包括众所周知的化学分子，包括富于化学的分子。复杂性，他们将注意力转向了大型多分子聚集体“自组装”的可能性，其中较小的分子构建块自发地组装成具有定义形状和结构的更精细的材料。犹他大学化学系的Peter J. Stang教授得到了有机和大分子化学计划的支持，他通过使用金属的协调络合物来研究纳米级超分子组件的自组装。 Stang教授开发了一种一般的合成策略，用于建造此类组件，利用了金属协调络合物的定义几何形状，以决定包含金属配合物作为关键构件的聚集体的形状和结构。通过他的研究，他正在帮助定义自组装在构建异常分子体系结构中的力量，这些分子体系结构可能在纳米级设备和分子机械领域中起着核心作用。他的研究也是对化学合成和超分子结构的本科生，研究生和博士后学生的教育和技术培训的有效工具。