CAREER: Impact of Flow-Induced Chain Alignment in Melt-Processed Complementary Semiconducting Polymer Blends

职业：熔融加工的互补半导体聚合物共混物中流动诱导链排列的影响

• 批准号: 1653909
• 负责人: Jianguo Mei
• 金额: $ 53.92万
• 依托单位: Purdue University
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 2017
• 资助国家: 美国
• 起止时间: 2017-06-01 至 2022-05-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1653909&HistoricalAwards=false
• 关键词: CAREER; Impact; Flow; Induced; Chain

NON-TECHNICAL SUMMARY: Semiconducting polymers are a special class of macromolecules that can conduct electrical currents and absorb or emit light. These polymers are used in a wide range of electronic devices, including light-emitting diodes, solar cells, transistors, and many others. This CAREER project is concerned with melt-processable semiconducting polymers, a departure from the current focus of solution-processed polymers (which usually involve toxic and environmentally harmful solvents for processing). Specifically, the proposal research is to explore, understand, and optimize flow-induced orientation in melt-processed semiconducting polymer blends and its impact on mechanical and electronic properties. Successful execution of this project could lead to a greener and more sustainable future for organic electronics. The educational objective of the CAREER plan is to build a dynamic polymer program at Purdue University for educating next generation polymer chemists, as well as for raising the public awareness about polymer science and engineering. Specifically, the PI will integrate polymer chemistry and laboratory into undergraduate and graduate curricula, and organize the Notre Dame - Purdue Annual Symposium on Soft Matter and Polymers in collaboration with local high schools. Further, the PI plans to adapt new technological tools (i.e. interactive online Apps that K-12 students and the general public nowadays prefer to interact with) for outreach activities. TECHNICAL SUMMARY: The CAREER proposal seeks to understand the nature of flow-induced chain alignment and the resulting morphology and its impact on optical, electronic and mechanical properties in melt-processed complementary semiconducting polymer blends (c-SPBs). Flow-induced crystallization has long been an important subject in conventional (insulating) polymer processing, but little is known in a semiconducting polymer melt. In this project, the PI will make melt-processable c-SPBs and study flow-induced structure formation in order to establish the structure-property-processing relationship. In phase I of the project, the PI will synthesize a wide range of semiconducting polymers that can be melted at desired temperatures. Phase II is concerned with elucidating the nature of flow-induced oriented structures and thin-film morphologies in polymer melts by in-situ rheo-optical and rheo-X-ray techniques, among other morphological tools. Phase III is aimed to correlate flow-induced morphologies with their electronic and mechanical properties in aligned fibers or thin films of polymer blends. This project aims to: 1) rationalize the molecular design principles for melt-processable semiconducting polymers, 2) reveal the role of flow-induced crystallization in polymer thin-film morphology development, and 3) offer a fundamental correlation between flow-induced morphologies and important materials properties. The long-term goal of this project is to develop high-performance melt-processable c-SPBs and enable melt-processing of semiconducting polymers for future organic electronics, complementary to or advantageous over current solution-processed approaches.

非技术摘要：半导体聚合物是一类特殊的大分子，它可以传导电流，吸收或发射光。这些聚合物被广泛应用于各种电子设备，包括发光二极管、太阳能电池、晶体管等。这个职业项目关注的是可熔融加工的半导体聚合物，与目前溶液加工聚合物(通常涉及有毒和对环境有害的溶剂进行加工)的重点不同。具体地说，该提案研究旨在探索、理解和优化熔融加工半导体聚合物共混物中的流动诱导取向及其对机械和电子性能的影响。该项目的成功实施可能会为有机电子产品带来更环保、更可持续的未来。职业生涯规划的教育目标是在普渡大学建立一个动态的聚合物课程，以培养下一代聚合物化学家，并提高公众对聚合物科学和工程的认识。具体地说，PI将把聚合物化学和实验室纳入本科生和研究生课程，并与当地高中合作举办巴黎圣母院-普渡大学软物质和聚合物年度研讨会。此外，PI计划采用新的技术工具(即K-12学生和普通公众如今更喜欢与之互动的互动在线应用程序)来开展外联活动。技术总结：该职业计划旨在了解熔融加工互补半导体聚合物共混物(c-SPBS)中流动诱导链排列的性质和由此产生的形态及其对光学、电子和机械性能的影响。流动诱导结晶长期以来一直是传统(绝缘)聚合物加工中的一个重要课题，但在半导体聚合物熔体中却知之甚少。在本项目中，PI将制作可熔融加工的c-SPBS，并研究流动诱导结构形成，以建立结构-性能-加工关系。在该项目的第一阶段，PI将合成一系列可以在所需温度下熔化的半导体聚合物。第二阶段涉及通过原位流变学和流变学X射线技术以及其他形态工具来阐明聚合物熔体中流动诱导取向结构和薄膜形态的本质。第三阶段的目的是将聚合物共混物的取向纤维或薄膜中的流动诱导形态与其电子和机械性能相关联。本项目的目标是：1)使熔融可加工半导体聚合物的分子设计原则合理化，2)揭示流动诱导结晶在聚合物薄膜形态发展中的作用，3)提供流动诱导形态与重要材料性能之间的基本关联。该项目的长期目标是开发高性能的可熔融加工的c-SPBS，并使未来有机电子产品的半导体聚合物能够进行熔融加工，以补充或优于目前的溶液加工方法。

项目成果

N-Type Complementary Semiconducting Polymer Blends

• DOI: 10.1021/acsapm.0c00261
• 发表时间: 2020-06
• 期刊: ACS Applied Polymer Materials
• 影响因子: 5
• 作者: W. McNutt;Aristide Gumyusenge;Luke A. Galuska;Zhiyuan Qian;Jiazhi He;X. Gu;Jianguo Mei

Side-Chain Sequence Enabled Regioisomeric Acceptors for Conjugated Polymers

• DOI: 10.1021/acs.macromol.8b01946
• 发表时间: 2018-10
• 期刊: Macromolecules
• 影响因子: 5.5
• 作者: Xuyi Luo;D. Tran;Natalie M. Kadlubowski;Carr Hoi Yi Ho;P. Riley;F. So;Jianguo Mei

n-Type Organic Field-Effect Transistors Based on Bisthienoisatin Derivatives

• DOI: 10.1021/acsaelm.9b00105
• 发表时间: 2019-04
• 期刊: ACS Applied Electronic Materials
• 影响因子: 4.7
• 作者: Dongho Yoo;Xuyi Luo;Tsukasa Hasegawa;M. Ashizawa;T. Kawamoto;H. Masunaga;N. Ohta;Hidetoshi Matsumoto;Jianguo Mei;Takehiko Mori

Impact of Backbone Rigidity on the Thermomechanical Properties of Semiconducting Polymers with Conjugation Break Spacers

• DOI: 10.1021/acs.macromol.0c00889
• 发表时间: 2020-07-28
• 期刊: MACROMOLECULES
• 影响因子: 5.5
• 作者: Galuska, Luke A.;McNutt, William W.;Gu, Xiaodan
• 通讯作者: Gu, Xiaodan

Semiconducting polymer blends that exhibit stable charge transport at high temperatures

• DOI: 10.1126/science.aau0759
• 发表时间: 2018-12-07
• 期刊: SCIENCE
• 影响因子: 56.9
• 作者: Gumyusenge, Aristide;Tran, Dung T.;Mei, Jiangno
• 通讯作者: Mei, Jiangno