Preparation, Characterization, and Application of Monodisperse Carbon-Based Nanomaterials

单分散碳基纳米材料的制备、表征及应用

• 批准号: 1006391
• 负责人: Mark Hersam
• 金额: $ 36万
• 依托单位: Northwestern University
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 2010
• 资助国家: 美国
• 起止时间: 2010-07-01 至 2015-12-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1006391&HistoricalAwards=false
• 关键词: Preparation; Characterization; Application; Monodisperse; Carbon

Technical: Carbon-based nanomaterials, including single-walled carbon nanotubes (SWNTs), double-walled carbon nanotubes (DWNTs), multi-walled carbon nanotubes (MWNTs), and graphene, have attracted significant interest in the scientific research community due to their superlative electronic, thermal, mechanical, and chemical properties. While impressive performance has been achieved on selected samples, large-scale technological development has been hindered by the structural inhomogeneity of as-synthesized carbon-based nanomaterials. In an effort to overcome this polydispersity problem, a technique called density gradient ultracentrifugation is employed to sort carbon-based nanomaterials by their physical and electronic structure. This project seeks to resolve the outstanding issues surrounding the preparation, characterization, and application of monodisperse carbon-based nanomaterials. Specific research objectives include: (1) Tuning co-surfactant ratio and loading to achieve monodisperse small diameter ( 1 nm) SWNTs due to their spectral advantages for near-infrared optoelectronic applications. (2) Demonstrating diameter and electronic type sorting of DWNTs in an effort to elucidate exciton energy transfer between concentric carbon nanotube shells. (3) Quantifying structure-density relationship for surfactant dispersed graphene as a function of surfactant type, co-surfactant ratio, density gradient, and pH. (4) Employing monodisperse carbon-based nanomaterials in electronic device and materials applications such as transistors, optoelectronics, transparent conductors, and sensors.Non-technical: The project addresses basic research issues in a topical area of materials science with high technological relevance. It is anticipated that this research will lead to substantial intellectual property and commercialization opportunities. Furthermore, an important component of the project is an education and outreach plan that is well integrated with the aforementioned research objectives including: (1) Undergraduate curriculum development through a revision and updating of an interdisciplinary course entitled Nanomaterials. (2) Hands-on, inquiry and design-based curriculum development for pre-college students in collaboration with the Materials World Modules program. (3) Engaging students and the general public about science and science policy via the Northwestern University Science Policy Action Network.

技术支持：碳基纳米材料，包括单壁碳纳米管（SWNTs）、双壁碳纳米管（DWNTs）、多壁碳纳米管（MWNTs）和石墨烯，由于其优异的电学、热学、力学和化学性能，引起了科学研究界的极大兴趣。虽然在选定的样品上取得了令人印象深刻的性能，但大规模的技术发展受到合成碳基纳米材料结构不均匀性的阻碍。为了克服这种多分散性问题，采用了一种称为密度梯度超离心的技术，通过它们的物理和电子结构对碳基纳米材料进行分类。该项目旨在解决围绕单分散碳基纳米材料的制备、表征和应用的突出问题。具体的研究目标包括：（1）调节助表面活性剂的比例和负载量，以获得单分散的小直径（1 nm）单壁碳纳米管，因为它们具有近红外光电应用的光谱优势。(2)展示直径和电子类型排序的DWNTs在努力阐明激子能量转移之间的同心碳纳米管壳。(3)量化表面活性剂分散的石墨烯的结构-密度关系，作为表面活性剂类型，辅助表面活性剂比例，密度梯度和pH值的函数。（4）将单分散碳基纳米材料应用于电子器件和材料应用，如晶体管，光电子，透明导体和传感器。非技术性：该项目解决了材料科学领域的基础研究问题，具有高技术相关性。预计这项研究将带来大量的知识产权和商业化机会。此外，该项目的一个重要组成部分是与上述研究目标相结合的教育和推广计划，包括：（1）通过修订和更新题为纳米材料的跨学科课程，开发本科课程。(2)与材料世界模块计划合作，为大学预科学生提供实践，探究和基于设计的课程开发。(3)通过西北大学科学政策行动网络让学生和公众参与科学和科学政策。