Synthesis and Applications of Functional Carbon Nanomaterials

功能性碳纳米材料的合成及应用

• 批准号: 1809740
• 负责人: Timothy Swager
• 金额: $ 56.5万
• 依托单位: Massachusetts Institute of Technology
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 2018
• 资助国家: 美国
• 起止时间: 2018-07-01 至 2022-06-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1809740&HistoricalAwards=false
• 关键词: Synthesis; Applications; Functional; Carbon; Nanomaterials

Non-Technical Abstract:There is an increasing need for more cost-effective, portable methods to measure and identify molecular species related to the environment, health, and industrial processes. Traditional analytical instruments often require a skilled operator and are expensive and bulky. This research seeks to make advances in these measurement methods by creating new electronic nanomaterials that enable the formation of highly specific chemical sensors. Key to creating selectivity in such materials is the ability to tailor the chemical environment so that they interact or react with the molecule of interest. New chemical reactions will be developed to attach groups to carbon nanotubes and create nanowires that will conduct more or less electrical current in response to the presence of a target molecule. Sensors empowered by these new nanomaterials can be lightweight, have very low power requirements, and can be the basis of new generations of functional materials. Nanostructured materials will be developed that detect toxic or biologically active chemicals that can be encountered in the workplace or at home. Technical Abstract:This project will create new functional carbon nanotubes (CNTs) and graphenes by developing/improving reactions that lead to the covalent attachment of different groups to the graphene pi-surfaces. These methods will expand the diversity of functional groups that can be attached and enable novel material concepts and functional interfaces. New functionalization methods will be developed using reactive intermediates such as fluorinated carbenes and nitrenes. We will direct our efforts by determining the impact of functionalization on the mobility of the carriers in the materials. It has been theoretically predicted that the products from carbenes and nitrenes will result in minimal perturbations to the extended electronic structure. In addition to perfecting and extending the methods initiated previously, this program will explore the covalent attachment of more complex molecular scaffolds that can create binding sites for molecules of interest. The functional nature of the target materials provides natural transitions to impactful, real-world applications. These include transduction materials that enable wearable sensors for workers who may be exposed to harmful chemicals in chemical/polymer production and/or coating processes. Creating soluble forms of SWCNTs and graphene opens a wide range of opportunities for fabrication of organic electronics for the selective assembly at interfaces.This award reflects NSF's statutory mission and has been deemed worthy of support through evaluation using the Foundation's intellectual merit and broader impacts review criteria.

非技术摘要：越来越需要更具成本效益的便携式方法来测量和识别与环境、健康和工业过程相关的分子种类。传统的分析仪器通常需要熟练的操作员，并且价格昂贵且体积庞大。这项研究旨在通过创造新的电子纳米材料来形成高度特异性的化学传感器，从而在这些测量方法方面取得进展。在此类材料中创造选择性的关键是能够定制化学环境，以便它们与感兴趣的分子相互作用或反应。 新的化学反应将被开发出来，将基团附着在碳纳米管上，并产生纳米线，纳米线将根据目标分子的存在而传导或多或少的电流。由这些新型纳米材料支持的传感器重量轻，功耗要求非常低，并且可以成为新一代功能材料的基础。 将开发纳米结构材料来检测工作场所或家里可能遇到的有毒或生物活性化学物质。技术摘要：该项目将通过开发/改进导致不同基团共价连接到石墨烯π表面的反应来创造新的功能性碳纳米管（CNT）和石墨烯。这些方法将扩大可连接的官能团的多样性，并实现新颖的材料概念和功能界面。将使用氟化卡宾和氮宾等反应中间体开发新的功能化方法。我们将通过确定功能化对材料中载流子迁移率的影响来指导我们的工作。理论上预测卡宾和氮宾的产物将对扩展电子结构产生最小的扰动。 除了完善和扩展之前启动的方法之外，该计划还将探索更复杂的分子支架的共价连接，这些分子支架可以为感兴趣的分子创建结合位点。目标材料的功能性质提供了向有影响力的现实应用的自然过渡。其中包括为可能在化学/聚合物生产和/或涂层过程中接触有害化学物质的工人提供可穿戴传感器的转换材料。创造可溶形式的单壁碳纳米管和石墨烯为有机电子器件的制造提供了广泛的机会，以便在界面上进行选择性组装。该奖项反映了 NSF 的法定使命，并通过使用基金会的智力价值和更广泛的影响审查标准进行评估，被认为值得支持。

项目成果

Chelating Phosphine Ligand Stabilized AuNPs in Methane Detection

甲烷检测中螯合膦配体稳定的 AuNP

• DOI: 10.1021/acsnano.0c04154
• 发表时间: 2020-09
• 期刊: ACS Nano
• 影响因子: 17.1
• 作者: Tang, Cen;Ku, Kang Hee;Lennon Luo, Shao;Concellón, Alberto;Wu, You;Lu, Ru;Swager, Timothy M.
• 通讯作者: Swager, Timothy M.

Solvent-responsive cavitand lanthanum complex

溶剂响应型空穴镧配合物

• DOI: 10.1039/c9dt03199e
• 发表时间: 2019-09
• 期刊: Dalton Transactions
• 影响因子: 4
• 作者: Guagnini, Francesca;Pedrini, Alessandro;Swager, Timothy M.;Massera, Chiara;Dalcanale, Enrico
• 通讯作者: Dalcanale, Enrico

Trace Hydrogen Sulfide Sensing Inspired by Polyoxometalate-Mediated Aerobic Oxidation

受多金属氧酸盐介导的有氧氧化启发的痕量硫化氢传感

• DOI: 10.1021/acscentsci.1c00746
• 发表时间: 2021-09-22
• 期刊: ACS Central Science
• 影响因子: 18.2
• 作者: Bezdek MJ;Luo SL;Liu RY;He Q;Swager TM
• 通讯作者: Swager TM

Flexible Chemiresistive Cyclohexanone Sensors Based on Single-Walled Carbon Nanotube–Polymer Composites

基于单壁碳纳米管聚合物复合材料的柔性化学电阻环己酮传感器

• DOI: 10.1021/acssensors.1c01076
• 发表时间: 2021-08
• 期刊: ACS Sensors
• 影响因子: 8.9
• 作者: Yoon, Bora;Choi, Seon;Swager, Timothy M.;Walsh, Gary F.
• 通讯作者: Walsh, Gary F.

Aryl Migration on Graphene

石墨烯上的芳基迁移

• DOI: 10.1021/jacs.0c05965
• 发表时间: 2020-10
• 期刊: Journal of the American Chemical Society
• 影响因子: 15
• 作者: He, Maggie;Swager, Timothy M.
• 通讯作者: Swager, Timothy M.