LEAPS-MPS: Molecular Engineering and Synergic Integration of Perovskite Nanomaterials with Thermoplastic Elastomers for Flexible Multifunctional Optical Materials

LEAPS-MPS：用于柔性多功能光学材料的钙钛矿纳米材料与热塑性弹性体的分子工程和协同集成

• 批准号: 2213054
• 负责人: Weinan Xu
• 金额: $ 25万
• 依托单位: University of Akron
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2022
• 资助国家: 美国
• 起止时间: 2022-09-01 至 2024-08-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=2213054&HistoricalAwards=false
• 关键词: LEAPS; MPS; Molecular; Engineering; Synergic

This award is funded in whole or in part under the American Rescue Plan Act of 2021 (Public Law 117-2).NON-TECHNICAL SUMMARYSoft and stretchable displays, lighting, and other optoelectronic devices are critical components in today’s world to improve the quality and productivity of life, society, and industries. The development of new and more powerful devices requires new functional materials. Semiconducting perovskite nanomaterials are among the most promising ones to be used in next-generation optoelectronic devices. Their further application, however, is constrained by their poor stability and processability. With this LEAPS-MPS project, Professor Weinan Xu at the University of Akron proposes to overcome those limitations by designing soft and stretchable hybrid materials composed of perovskite nanomaterials and thermoplastic elastomers. The soft copolymer matrix protects the perovskite nanomaterials and at the same time controls their alignment and assembly, so that multifunctional, highly stable, and stretchable optical materials will be generated. This project will also contribute to the education of next-generation polymer and materials scientists and engineers and promote STEM education to the general public. Educational programs on nanomaterials and polymers will be implemented with local schools and science centers. The hands-on activities and demonstrations of nanomaterials and polymers in our daily life will stimulate younger generations’ interests in science and engineering. TECHNICAL SUMMARYSemiconducting perovskite nanomaterials have promising applications in optoelectronics, energy conversion, advanced lighting and displays. But several major challenges need to be addressed before their full potential can be achieved, which include poor stability and the lack of efficient nanopatterning methods. This LEAPS-MPS award aims to address those challenges by integrating perovskite nanoparticles with block copolymer thermoplastic elastomers in a molecularly precise and synergistic way. The surface chemistry of the perovskite nanoparticles and the ionic state of the polymer blocks in the thermoplastic elastomers will be designed and customized, so that high compatibility and strong preferential interactions between the perovskite nanoparticles and a particular polymer block will be achieved. Two or multiple types of perovskite nanoparticles with different optical properties will be simultaneously patterned based on their selective affinity with the functionalized polymer blocks in the copolymers. Multifunctional, highly stable, and stretchable perovskite-copolymer composite materials will be created and systematically investigated with high-resolution microscopies, spectroscopies, and multiscale simulation. This project is interdisciplinary, and it provides opportunities for training students in different areas of materials chemistry, colloidal science, microfabrication, and device engineering.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.

该奖项的全部或部分资金来自《2021年美国救援计划法案》(公共法律117-2)。非技术性SUMMARYSoft和可伸缩显示器、照明和其他光电设备是当今世界提高生活、社会和行业质量和生产力的关键部件。新的和更强大的设备的开发需要新的功能材料。半导体钙钛矿纳米材料是最有希望应用于下一代光电子器件的材料之一。然而，它们的进一步应用受到其较差的稳定性和加工性的限制。通过这项LEAPS-MPS项目，阿克伦大学的徐伟南教授建议通过设计由钙钛矿纳米材料和热塑性弹性体组成的柔软且可伸展的混合材料来克服这些限制。软共聚物基质在保护钙钛矿型纳米材料的同时，控制它们的取向和组装，从而产生多功能、高度稳定和可拉伸的光学材料。该项目还将促进下一代聚合物和材料科学家和工程师的教育，并向普通公众推广STEM教育。有关纳米材料和聚合物的教育项目将与当地学校和科学中心一起实施。纳米材料和聚合物在我们日常生活中的实践活动和演示将激发年轻一代对科学和工程的兴趣。技术综述半导体钙钛矿纳米材料在光电子学、能源转换、先进照明和显示器等领域有着广阔的应用前景。但在充分发挥其潜力之前，需要解决几个主要挑战，其中包括稳定性差和缺乏有效的纳米颗粒方法。LEAPS-MPS奖旨在通过以分子精确和协同的方式将钙钛矿纳米颗粒与嵌段共聚热塑性弹性体相结合来应对这些挑战。设计和定制钙钛矿纳米粒子的表面化学和热塑性弹性体中聚合物嵌段的离子状态，以实现钙钛矿纳米粒子与特定聚合物嵌段之间的高相容性和强烈的择优相互作用。具有不同光学性质的两种或多种类型的钙钛矿型纳米粒子将基于它们与共聚物中功能化聚合物嵌段的选择性亲和力而同时被图案化。多功能、高度稳定和可拉伸的钙钛矿共聚物复合材料将被创造出来，并利用高分辨率显微镜、光谱和多尺度模拟进行系统的研究。这个项目是跨学科的，它为学生提供了在材料化学、胶体科学、微制造和设备工程的不同领域进行培训的机会。该奖项反映了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。