Development of Controlled Polymerization for Hierarchically Organized Conjugated Polymers

多级共轭聚合物的受控聚合研究进展

• 批准号: 2004117
• 负责人: Evgueni Nesterov
• 金额: $ 45万
• 依托单位: Northern Illinois University
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2020
• 资助国家: 美国
• 起止时间: 2020-07-01 至 2024-06-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=2004117&HistoricalAwards=false
• 关键词: Development; Controlled; Polymerization; Hierarchically; Organized

In this project funded by the Macromolecular, Supramolecular and Nanochemistry Program in the Division of Chemistry, Professor Evgueni Nesterov of the Department of Chemistry and Biochemistry at Northern Illinois University is developing new synthetic routes for the construction of conjugated polymers. Conjugated polymers have special chemical bonds that enable them to conduct electricity. In this research, conjugated polymers are prepared using catalysts based on palladium. Palladium is used to speed up the polymerization process, making it easier to convert starting materials to desired product. The research activities are focused on developing new molecular building blocks for the construction of conjugated polymers and well as understanding of how this palladium-catalyzed reaction works. The results of this project have the potential to broaden the scope of conjugated polymer structures that can be prepared in a controlled manner, which is of significant importance for the development of more efficient sensing devices. The research is having a broader impact through the implementation of a chemical drawing program for K-12 public schools. Particular emphasis is placed on underperforming schools where students have few opportunities to learn about modern science and not exposed to hands-on science experiences. This research is focused on rational development of palladium-catalyzed Suzuki-Miyaura catalyst-transfer polymerization (SCTP) as a general method of controlled chain-growth polymerization as well as the expansion of its application for the preparation of a broad range of conjugated polymers. There are three main objectives associated with the project. The first objective focuses on structural and mechanistic studies of palladium-catalyzed externally initiated SCTP with the purpose of developing a generally applicable polymerization protocol. In the second objective, the developed methodology is used to prepare and study sequence-controlled hierarchically organized conjugated polymers architectures. The last aim concentrates on investigating the possibility to extend SCTP towards larger diversity of monomers and also development of efficient routes towards surface-initiated polymerization for the preparation of thin films with advanced control of structure and morphology. Expansion of the step-growth polymerization technique to conjugated polymers opens doors for the synthesis of a large range of well-defined semiconducting polymers with controlled molecular weights and dispersities.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.

在这个由化学系高分子、超分子和纳米化学计划资助的项目中，北伊利诺伊大学化学和生物化学系的Evgueni Nester ov教授正在为构建共轭聚合物开发新的合成路线。共轭聚合物具有特殊的化学键，使它们能够导电。在本研究中，以钯为催化剂制备共轭聚合物。钯被用来加速聚合过程，使原料更容易转化为所需的产品。研究活动的重点是为构建共轭聚合物开发新的分子构件，以及了解这种钯催化的反应是如何工作的。该项目的结果有可能扩大可控制备的共轭聚合物结构的范围，这对开发更有效的传感器件具有重要意义。这项研究正在通过实施一项针对K-12公立学校的化学绘画计划产生更广泛的影响。特别强调的是表现不佳的学校，这些学校的学生几乎没有机会学习现代科学，也没有接触到亲身实践的科学经验。本研究致力于合理开发钯催化的Suzuki-Miyaura催化剂转移聚合(SCTP)作为一种通用的可控链生长聚合方法，并扩展其在制备广泛的共轭聚合物中的应用。该项目有三个主要目标。第一个目标集中于钯催化的外部引发的SCTP的结构和机理研究，目的是开发一种普遍适用的聚合方案。在第二个目标中，所开发的方法被用于制备和研究顺序控制的层次化组织的共轭聚合物结构。最后一个目标集中在研究将SCTP扩展到更大单体多样性的可能性，以及开发有效的表面引发聚合方法来制备具有先进结构和形态控制的薄膜。将分步生长聚合技术扩展到共轭聚合物，为合成一系列定义明确、分子量和分散性可控的半导体聚合物打开了大门。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。