International Collaboration in Chemistry: Synthetic Organic Approaches to Carbon Nanotubes with Well-Defined Structure

国际化学合作：具有明确结构的碳纳米管的有机合成方法

• 批准号: 1125054
• 负责人: Yves Rubin
• 金额: $ 39万
• 依托单位: University of California-Los Angeles
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2011
• 资助国家: 美国
• 起止时间: 2011-10-01 至 2015-09-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1125054&HistoricalAwards=false
• 关键词: International; Collaboration; Chemistry; Synthetic; Organic

In this International Collaboration in Chemistry between US Investigators and their Counterparts Abroad (ICC) project funded by the Macromolecular, Supramolecular and Nanochemistry Program of the Chemistry Division, Yves Rubin of the University of California at Los Angeles will develop methods for the solution-phase self-assembly of carbon-rich macrocycles into columnar stacks and study the controlled polymerization of these stacks into nanotubular carbon-rich systems in solution and on surfaces by STM. This work includes an international collaboration with Prof. Yoshito Tobe of Osaka University, Japan. Prof. Tobe's work will be funded by the Japan Society for the Promotion of Science (JSPS). The ultimate thrust of this project is to achieve carbonization of these nanotubular carbon-rich products into well-defined carbon nanotubes with precise location of side-chains. The research has three complementary components. In the first part, the research will focus on the use of molecular assembly of self-complementary carbon-rich macrocyclic derivatives to achieve the correct stacking parameters that lead to facile thermal topochemical polymerization of columnar stacks of macrocycles. In the second part, controlled polymerization of the carbon-rich macrocycles will be examined and optimized, both within single crystals through heat, irradiation or high pressure, or with self-assembled nanotubules on a surface by pulsed voltage from STM tips, UV irradiation, or heat. Finally, a study of the structures and properties of the resulting carbon nanotubes will determine if they have the desired well-defined widths as well as carbon network and substituent topologies corresponding to their designed molecular precursors. The broader impacts involve training graduate and undergraduate students, enhancing research infrastructure by bringing together an international collaborative group, and the potential societal benefits of a long sought access to well-defined carbon nanotubes with unique electronic properties.The availability of carbon nanotubes, ultrasmall tubes comprised of a single layer of carbon atoms, with defined width has been a grand challenge of carbon-based nanotechnology. Ready access to carbon nanotubes with precise dimensions and electronic properties is not yet possible, and this research seeks to solve part of this problem by achieving a controlled formation of large sections of carbon nanotubes. The results of this research could ultimately impact industries and commercial products that would utilize nanoelectronics.

在这个由化学系大分子，超分子和纳米化学项目资助的美国研究人员与国外同行（ICC）之间的化学国际合作项目中，位于洛杉矶的加州大学的Yves Rubin将开发富碳大环的溶液相自组装成柱状堆叠的方法，并研究这些堆叠成纳米管碳的受控聚合，丰富的系统中的解决方案和表面上的STM。这项工作包括与日本大坂大学Yoshito Tobe教授的国际合作。 Tobe教授的工作将由日本科学促进协会（JSPS）资助。该项目的最终目标是将这些纳米管状富碳产物碳化成具有精确侧链位置的明确碳纳米管。 这项研究有三个相辅相成的组成部分。 在第一部分中，研究将集中在使用分子组装的自互补的富碳大环衍生物，以实现正确的堆叠参数，导致容易的热拓扑化学聚合的柱状堆叠的大环。 在第二部分中，富碳大环的受控聚合将被检查和优化，无论是在单晶内通过加热，照射或高压，或与自组装的纳米管表面上的脉冲电压从STM提示，紫外线照射，或热。 最后，对所得碳纳米管的结构和性质的研究将确定它们是否具有所需的明确定义的宽度以及对应于其设计的分子前体的碳网络和取代基拓扑结构。 更广泛的影响包括培养研究生和本科生，通过汇集国际合作小组来加强研究基础设施，以及长期寻求获得具有独特电子特性的定义明确的碳纳米管的潜在社会效益。碳纳米管的可用性，由单层碳原子组成的超小管，具有定义的宽度，一直是碳基纳米技术的巨大挑战。 目前还不可能获得具有精确尺寸和电子特性的碳纳米管，这项研究试图通过控制大部分碳纳米管的形成来解决这一问题。 这项研究的结果可能最终影响将利用纳米电子学的工业和商业产品。