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.

在化学划分部的大分子，超分子和纳米化学计划的支持下。来自德克萨斯州A＆M大学的Emily Pentzer和Jodie Lutkenhaus将促进有关如何将电子设备（称为“氧化还原活性基团”）放置在聚合物和颗粒上的基本知识，从而影响其存储和产生电能的能力。这将通过在氧化还原活性组之间制备具有控制间距的聚合物来完成，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高级知识可能会导致能源，电子和医疗应用的突破性进步，例如使有机聚合物能够替换电池的金属组件。除了科学研究外，还将对学科研究生，研究生和博士后研究员进行培训，以解决复杂的问题并成为协作STEM劳动力的产品成员；将制作和共享教育视频和动手演示；将通过美国国家工程Engineergirl网站来考虑高中妇女。将合成三种不同的材料，并用于确定结构和电化学性质之间的关系。这些研究将使用一个有机氧化还原活性组（2,2,6,6-四甲基哌啶-1-氧基（TEMPO）），并且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，聚合物主链周围的节奏单元的组织将变化。在此类中，节奏单元之间的原子数将保持不变，但它们的空间取向将有所不同。在第二类材料中，聚合物主链上的节奏单元之间的间距将变化；在此类中，将更改节奏单元之间的原子数。将制备的第三类材料是固体球形颗粒，这些颗粒装饰有节奏组或含有节奏组的短聚合物链；这些装饰的颗粒将添加到含速度的聚合物中。预计这三个类别的不同结构将改变节奏单元在实心膜中相互相互作用，从而改变如何存储电能。该材料的物理和电化学特性将得到充分的特征，并且该工作可能会为材料结构如何与基于聚合物的材料中的电子和离子传递相关。该奖项反映了NSF的法定任务，并被认为是通过使用基金会的知识分子和更广泛影响的审查标准来通过评估来支持的。

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.