Spatially Defined Radical-Containing Polymers for Enhanced Charge Transfer

用于增强电荷转移的空间限定的含自由基聚合物

• 批准号: 2104179
• 负责人: Emily Pentzer
• 金额: $ 57万
• 依托单位: Texas A&M Engineering Experiment Station
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 2021
• 资助国家: 美国
• 起止时间: 2021-08-01 至 2024-07-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=2104179&HistoricalAwards=false
• 关键词: Spatially; Defined; Radical; Containing; Polymers

With the support of the Macromolecular, Supramolecular and Nanochemistry Program in the Division of Chemistry, Drs. Emily Pentzer and Jodie Lutkenhaus from Texas A&M University will advance the fundamental knowledge of how the placement of groups that can transfer electrons (dubbed “redox-active groups”) on polymers and particles impacts their ability to store and produce electrical energy. This will be accomplished by preparing polymers with controlled spacing between redox-active groups, then determining how the structure of these polymers impact their ability to move electrical charges. The advanced knowledge produced through this work may lead to ground breaking advances for energy, electronic, and medical applications, such as enabling organic polymers to replace the metal components of batteries. In addition to the scientific research, undergraduate students, graduate students, and a postdoctoral researcher will be trained to address complex problems and be productive members of a collaborative STEM workforce; educational videos and hands-on demonstrations will be produced and shared; and high school women will be mentored through the US National Academy of Engineering EngineerGirl website. Three different classes materials will be synthesized and used to identify the relationship between structure and electrochemical properties. One organic redox-active group will be used for these studies (2,2,6,6-tetramethylpiperidine-1-oxyl (TEMPO)), and the knowledge gained should be applicable to other redox-active units. In the first class of materials, the organization of the TEMPO units around a polymer backbone will be varied; in this class, the number of atoms between the TEMPO units will remain the same but their spatial orientation around will be different. In the second class of materials, the spacing between TEMPO units on a polymer backbone will be varied; in this class, the number of atoms between the TEMPO units will be changed. The third class of materials that will be prepared are solid spherical particles that are decorated with either TEMPO groups or short polymer chains that contain TEMPO groups; these decorated particles will be added to the TEMPO-containing polymers. The different structures of the three classes are expected to change how the TEMPO units interact with each other in a solid film, and thus how electrical energy can be stored. The physical and electrochemical properties of the materials will be thoroughly characterized and the work will likely produce knowledge on how material structure correlates to transfer of electrons and ions in polymer-based materials.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.

在化学系大分子，超分子和纳米化学项目的支持下，德克萨斯A M大学的艾米丽彭泽和朱迪·卢特肯豪斯博士将推进关于如何在聚合物和颗粒上放置可以转移电子的基团（被称为“氧化还原活性基团”）影响其储存和产生电能的能力的基础知识。这将通过制备氧化还原活性基团之间具有受控间距的聚合物来实现，然后确定这些聚合物的结构如何影响其移动电荷的能力。通过这项工作产生的先进知识可能会导致能源，电子和医疗应用的突破性进展，例如使有机聚合物能够取代电池的金属组件。除了科学研究，本科生，研究生和博士后研究员将接受培训，以解决复杂的问题，并成为合作STEM劳动力的生产成员;教育视频和实践演示将被制作和分享;高中女性将通过美国国家工程学院EngineerGirl网站得到指导。三种不同类型的材料将被合成，并用于确定结构和电化学性能之间的关系。这些研究将使用一个有机氧化还原活性基团（2，2，6，6-四甲基哌啶-1-氧基（克里思）），所获得的知识应适用于其他氧化还原活性单元。在第一类材料中，克里思单元围绕聚合物主链的组织将是不同的;在这类材料中，克里思单元之间的原子数量将保持不变，但它们周围的空间取向将不同。在第二类材料中，聚合物主链上克里思单元之间的间距将变化;在这类材料中，克里思单元之间的原子数将改变。将制备的第三类材料是用克里思基团或含有克里思基团的短聚合物链装饰的固体球形颗粒;这些装饰颗粒将添加到含TEMPO的聚合物中。这三种类型的不同结构预计将改变克里思单元在固体膜中相互作用的方式，从而改变电能的储存方式。材料的物理和电化学特性将被彻底表征，这项工作可能会产生关于材料结构如何与聚合物基材料中电子和离子转移相关的知识。该奖项反映了NSF的法定使命，并被认为值得通过使用基金会的知识价值和更广泛的影响审查标准进行评估来支持。

项目成果

Nonconjugated Redox-Active Polymers: Electron Transfer Mechanisms, Energy Storage, and Chemical Versatility

非共轭氧化还原活性聚合物：电子转移机制、能量存储和化学多功能性

• DOI: 10.1146/annurev-chembioeng-092220-111121
• 发表时间: 2023
• 期刊: Annual Review of Chemical and Biomolecular Engineering
• 影响因子: 8.4
• 作者: Ma, Ting;Easley, Alexandra D.;Thakur, Ratul Mitra;Mohanty, Khirabdhi T.;Wang, Chen;Lutkenhaus, Jodie L.
• 通讯作者: Lutkenhaus, Jodie L.