CAREER: Multi-atomic Layered Electronic Metal-organic Materials

职业：多原子层状电子金属有机材料

• 批准号: 2143569
• 负责人: Dawei Feng
• 金额: $ 66.53万
• 依托单位: University of Wisconsin-Madison
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 2022
• 资助国家: 美国
• 起止时间: 2022-04-01 至 2027-03-31
• 项目状态: 未结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=2143569&HistoricalAwards=false
• 关键词: CAREER; Multi; atomic; Layered; Electronic

NON-TECHNICAL SUMMARYMetal-organic hybrid materials (MOMs), such as coordination complexes, coordination polymers (CP), and metal-organic frameworks (MOFs), possess vast structural diversity and thus have been extensively investigated for magnetism, catalysis, sensing, gas storage and separation, and biomedical applications. Ideally, embedding the synthetic tunability of MOMs with the electronic properties (e.g., electrically conductive MOMs, called eMOMs) would expand the molecular functionality of conventional inorganic electronic materials, offering new opportunities to address challenges in many vital electronic/electrochemical devices, including wearable devices, sensors, electrocatalysts, and electrochemical energy storage. Unfortunately, to-date conventional MOMs are primarily insulators by nature. With this CAREER project, supported by the Solid State and Materials Chemistry program in the Division of Materials Research, Prof. Dawei Feng studies a general approach to synthesize new types of eMOMs based on two dimensional (2D) multiple layered atomic structures (M-eMOMs). This research utilizes the structural diversity of MOMs to unlock their full potential in advanced electronic and electrochemical devices. The PI and his team also partner with the Materials Research Science and Engineering Centers (MRSEC) education group and the Institute for Chemical Education (ICE) at University of Wisconsin-Madison to organize “Make MOFs at home” after school enrichment program. Through the integrated education plans, middle schoolers get hands-on experiences in synthesizing MOMs using safe, daily accessible materials to foster their interests in STEM, and undergraduate and graduate students receive interdisciplinary training in materials science, chemistry, and fabrication of energy storage devices. TECHNICAL SUMMARYThe compositional diversity and synthetic tunability of metal-organic materials (MOMs) give them great potential for a series of applications where precise tuning of structures and functionalities plays a vital role. Integration of electronic properties (e.g., electronic conductivity) into MOFs is of particular interest as it adds diverse functionalities on top of electronic properties, which greatly enriches the class of current electronic materials and the scope of their applications. However, the majority of MOMs are insulators with just a few exceptional examples, most of which adopt single atomic layered p-d π conjugated 2D structures. This NSF CAREER project develops new classes of electronically conducting MOMs, called eMOMs through assembling multi-atomic layered 2D structures with p-d σ conjugation, namely M-eMOMs. The metal species and organic ligands are systematically micro-tuned to manipulate the electronic characteristics and functionality of M-eMOMs. Kinetically controlled synthetic methodologies are adopted to achieve highly crystalline M-eMOM products for precise measurement of their intrinsic properties. This permits elucidation of fundamental aspects of interactions between the metal and organic building units and the subsequent impact on the bulk electronic properties. In turn, this research is poised to enable applications in various areas, including electrocatalysis and flexible electronic devices. This work not only provides a new platform to integrate metals with organic building units but also introduces new 2D material candidates with vastly expanded molecular engineering potential.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.

非技术摘要金属有机杂交材料（MOMS），例如配位络合物，协调聚合物（CP）和金属有机框架（MOFS），潜在的巨大结构多样性，因此已被广泛研究，以备磁性，催化，敏感性，储存，气体储存和分离以及分离和生物形成。理想情况下，嵌入母亲与电子特性（例如，导电妈妈，称为EMOMS）的合成可可仪将扩大常规无机电子材料的分子功能，为解决许多重要的电子/电化学设备的挑战提供新的机会，包括耐磨性式启动器，电气，电气，电动机，和电动机，以及Electrocatials和ElectrotroChem和ElectrotroChem。不幸的是，迄今为止，常规妈妈本质上是主要的绝缘子。借助此职业项目，在材料研究部的固态和材料化学计划的支持下，Dawei Feng教授研究了一种基于二维（2D）多层原子结构（M-Emoms）的新型EMOM的一般方法。这项研究利用妈妈的结构多样性在先进的电子和电化学设备中释放其全部潜力。 PI和他的团队还与威斯康星大学麦迪逊分校的材料研究科学与工程中心（MRSEC）教育小组（MRSEC）教育小组（MRSEC）教育小组（MRSEC）教育小组（ICE）（ICE）合作，在放学后组织“在家中制造MOF”。通过综合教育计划，中学生可以采取动手实践经验，可以使用安全的，每天的可访问材料来促进其对STEM的兴趣，并接受本科生和研究生的兴趣，并接受了材料科学，化学和储能设备制造的跨学科培训。技术总结金属有机材料（MOMS）的综合多样性和合成可鼠能力为它们提供了一系列应用的巨大潜力，在这些应用中，精确调整结构和功能起着至关重要的作用。将电子特性（例如电子电导率）集成到MOF中特别令人感兴趣，因为它在电子性质之上添加了不同的功能，这极大地丰富了当前电子材料类别及其应用的范围。但是，大多数妈妈都是绝缘子，只有几个例外的例子，其中大多数采用单个原子分层p-dπ共轭2D结构。这个NSF职业项目通过将多原子分层的2D结构与p-dσ共轭（即m-emoms）组装在一起，开发了新的以电子传导的妈妈，称为EMOM。金属物种和有机配体是系统地微调的，以操纵M-Emoms的电子特性和功能。采用了动力学控制的合成方法来实现高度结晶的M-Emom产品，以精确测量其内在特性。这允许阐明金属和有机建筑单元之间相互作用的基本方面以及对散装电子特性的后续影响。反过来，这项研究被中毒以在包括电催化和柔性电子设备在内的各个领域进行应用。这项工作不仅提供了一个新的平台，可以将金属与有机建筑单元集成在一起，而且还引入了具有巨大扩展的分子工程潜力的新的2D材料候选者。该奖项反映了NSF的法定任务，并被认为是通过基金会的知识分子优点和更广泛的影响审查标准来通过评估来评估的。