Block Copolymer Based Porous Nanostructures from Non-Equilibrium Processes

非平衡过程中基于嵌段共聚物的多孔纳米结构

• 批准号: 1707836
• 负责人: Ulrich Wiesner
• 金额: $ 94万
• 依托单位: Cornell 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: 2017-08-01 至 2023-07-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1707836&HistoricalAwards=false
• 关键词: Block; Copolymer; Based; Porous; Nanostructures

NON-TECHNICAL SUMMARYThis project is on advanced porous nanostructures made from specialized plastic materials ("block copolymers") using novel non-equilibrium processes. It will promote scientific understanding of the fundamental principles of how to controllably push polymer-based materials systems away from equilibrium towards the successful generation of porous asymmetric membranes or highly ordered ("single-crystal") nanostructures. The project may offer profound impact in a range of technologically important areas. For example, if successful, the project will provide advanced membrane materials for applications in high-resolution biopharmaceutical separations and will allow use of porous polymer molds to structure higher-melting materials like metals or semiconductors into periodically ordered porous single-crystal nanostructures of interest in the microelectronic industry. Besides expected benefits for society in a number of areas of technology development, the project will also support education and diversity by promoting interest of a diverse range of students in the science, technology, engineering, and mathematics (STEM) fields.TECHNICAL SUMMARYThis project aims to investigate the synthesis and preparation, characterization, and formation mechanisms of porous block copolymer directed nanostructures obtained using non-equilibrium formation processes. Two distinct approaches will be pursued employing ABC triblock terpolymer self-assembly: One submits the terpolymers to non-solvent induced phase separation enabling asymmetric membrane formation, the other to transient laser heating to access temperature processing regimes hitherto unexplored for polymers. The aim of the proposed program is to understand the underlying fundamental chemical, physical and kinetic formation principles enabling generalization of results to other classes of materials. The proposed research includes synthesis of all components, preparation of porous nanostructured materials using the two non-equilibrium formation principles, and characterization of the final assembly structures using various scattering and electron microscopy techniques. Interdisciplinarity will be a central feature of the effort. The program will further involve training and development of human resources, including the participation of underrepresented groups, and industrial outreach.

该项目是由特殊塑料材料（“嵌段共聚物”）使用新的非平衡工艺制成的先进多孔纳米结构。它将促进对如何可控地将聚合物基材料系统从平衡状态推向成功生成多孔不对称膜或高度有序（“单晶”）纳米结构的基本原理的科学理解。该项目可能在一系列重要技术领域产生深远影响。例如，如果成功，该项目将为高分辨率生物制药分离提供先进的膜材料，并允许使用多孔聚合物模具将高熔点材料（如金属或半导体）结构成微电子工业感兴趣的周期性有序多孔单晶纳米结构。除了在多个技术发展领域为社会带来预期效益外，该项目还将通过促进各种学生对科学、技术、工程和数学（STEM）领域的兴趣来支持教育和多样性。本项目旨在研究多孔嵌段共聚物定向纳米结构的合成、制备、表征和形成机理。采用ABC三嵌段三元共聚物自组装将采用两种不同的方法：一种是将三元共聚物进行非溶剂诱导相分离，从而形成不对称膜，另一种是进行瞬态激光加热，以获得迄今为止尚未探索的聚合物温度处理机制。该计划的目的是了解潜在的基本化学，物理和动力学形成原理，使结果推广到其他类别的材料。提出的研究包括所有组分的合成，使用两种非平衡形成原理制备多孔纳米结构材料，以及使用各种散射和电子显微镜技术表征最终组装结构。跨学科将是这项工作的核心特征。该方案将进一步涉及人力资源的培训和开发，包括代表性不足的群体的参与，以及工业外联。

项目成果

Block copolymer derived 3-D interpenetrating multifunctional gyroidal nanohybrids for electrical energy storage

• DOI: 10.1039/c7ee03571c
• 发表时间: 2018-05
• 期刊: Energy and Environmental Science
• 影响因子: 32.5
• 作者: J. Werner;Gabriel G. Rodríguez-Calero;H. Abruña;U. Wiesner

Block Copolymer Self-Assembly Directed Hierarchically Structured Materials from Nonequilibrium Transient Laser Heating

• DOI: 10.1021/acs.macromol.8b01766
• 发表时间: 2019-01
• 期刊: Macromolecules
• 影响因子: 5.5
• 作者: K. W. Tan;U. Wiesner

Superconducting Quantum Metamaterials from Convergence of Soft and Hard Condensed Matter Science

软硬凝聚态科学融合的超导量子超材料

• DOI: 10.1002/adma.202006975
• 发表时间: 2021
• 期刊: Advanced Materials
• 影响因子: 29.4
• 作者: Beaucage, Peter A.;van Dover, R. Bruce;DiSalvo, Francis J.;Gruner, Sol M.;Wiesner, Ulrich
• 通讯作者: Wiesner, Ulrich

Exploring Periodic Bicontinuous Cubic Network Structures with Complete Phononic Bandgaps

• DOI: 10.1021/acs.jpcc.7b07267
• 发表时间: 2017-10-12
• 期刊: JOURNAL OF PHYSICAL CHEMISTRY C
• 影响因子: 3.7
• 作者: Hur, Kahyun;Hennig, Richard G.;Wiesner, Ulrich
• 通讯作者: Wiesner, Ulrich

A crystalline and 3D periodically ordered mesoporous quaternary semiconductor for photocatalytic hydrogen generation.

• DOI: 10.1039/c7nr09251b
• 发表时间: 2018-02
• 期刊: Nanoscale
• 影响因子: 6.7
• 作者: T. Weller;Leonie Deilmann;J. Timm;Tobias S Dörr;P. Beaucage;A. Cherevan;Ulrich B Wiesner;D. Eder