RUI: Tailored ROMP-based Solid Polymer Electrolytes and Single-Ion Conductors for Use in Ion Transport Applications

非技术综述：可传导离子的聚合物对许多新兴技术非常重要，例如锂离子电池、下一代电池以及可用作生物系统传感器的新型聚合物晶体管。这些材料可能会提高电池的安全性和性能，随着它们的使用增加，这一点至关重要。将生产各种材料，其成分可以调整，从而在不同类型的性能之间实现平衡。它们可以用不那么易燃、更轻、更灵活的材料制造电池，或者比现有材料有更大的存储容量。此外，这些新的离子导电材料可能有助于制造依赖于离子传输的生物传感器。这项研究将包括与其他学术机构的科学家合作，并根据需要在国家设施中使用仪器。科学队伍的发展将通过本科生直接参与这项研究的所有方面得到支持，并在以本科生为主的机构进行。推广活动将通过参与数学、工程和科学成就计划以及大学早期STEM奖学金的职业发展机会，让未被充分代表的初中生和高中生参与。技术摘要：聚合物电解质材料将被开发为锂离子或其他下一代电池的固体聚合物电解质载体，以及用于有机电化学晶体管的混合物。这些聚合物将基于二羧亚胺氧杂冰片烯单体，允许使用开环歧化聚合来合成均嵌段共聚物和双嵌段共聚物。这种碱性单体允许设计灵活性，侧链将包括柔性低聚环氧乙烷(高盐溶解度)、单离子导电单元和其他基团，从而允许更高的玻璃化转变温度和模数。将生产各种材料，其中共聚物组成可以调整，从而在玻璃化转变温度和离子浓度之间实现平衡。性能最好的单离子导体固体聚合物电解质将被用作嵌段共聚物的一个组分，第二个组分具有高模数的树枝状抑制。其次，利用相关的聚合物电解质和π共轭半导体聚合物模型研究有机混合电子和离子导体的离子输运和共混形态，以优化其在有机电化学晶体管器件中的性能。这些新材料将通过介电光谱、原子力显微镜、DSC和潜在的固态核磁共振进行评估。如果需要散射数据(X射线或中子)，这项研究将与合作者或在国家实验室进行。本科生研究人员将参与这项研究的所有方面，并将参与外展活动。这一奖项反映了NSF的法定使命，并通过使用基金会的智力优势和更广泛的影响审查标准进行评估，被认为值得支持。

NON-TECHNICAL SUMMARY:Polymers that can conduct ions are important for many emerging technologies such as such as lithium-ion batteries, next generation batteries, as well as new types of polymer-based transistors that could be used as sensors in biological systems. These materials may lead to increased safety and performance of batteries, which is crucial as their use grows. A variety of materials will be produced whose compositions can be adjusted allowing for a balance between different kinds of properties. They could contribute to batteries with materials that are less flammable, lighter, flexible, or have more storage capacity than current materials. Additionally, these new ion conductive materials could contribute to biological sensors that depend on ion transport. This research will include collaborations with scientists at other academic institutions and use of instrumentation at national facilities as needed. Development of the scientific workforce will be supported through the direct involvement of undergraduate students in all aspects of this research and conducted at a predominantly undergraduate institution. Outreach activities will involve underrepresented junior high and high school students through involvement with the Mathematics, Engineering, and Science Achievement program and professional development opportunities for early college STEM scholars.TECHNICAL SUMMARY:Polymer electrolyte materials will be developed for potential use as solid polymer electrolyte supports in lithium-ion or other next-generation batteries as well as use in blends for organic electrochemical transistors. These polymers will be based on dicarboximide oxanorbornene monomers allowing for homo- and di-block copolymers to be synthesized using ring-opening metathesis polymerization. This base monomer allows for design flexibility where side chains will include flexible oligomeric ethylene oxides (high salt solubility), single-ion conducting units, and other groups, which allow for a higher glass transition temperature and modulus. A variety of materials will be produced where copolymer composition can be adjusted allowing for a balance between glass transition temperature and the ion concentration. The best performing single-ion conductor solid polymer electrolytes will be used as one component in a block copolymer with the second component having a high modulus for dendritic suppression. Second, ion transport and blend morphology of organic mixed electronic and ionic conductors will be studied using related polymer electrolytes and a model π-conjugated semi-conducting polymer to optimize their performance in an organic electrochemical transistor device. These new materials will be evaluated by dielectric spectroscopy, atomic force microscopy, DSC, and potentially solid-state NMR. If scattering data (X-rays or neutrons) are needed, this research will be conducted with collaborators or at national laboratories. Undergraduate student researchers will be involved in all aspects of this research and will participate in outreach activities..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.