Defining Reaction Paths for Chalcogenide Materials Discovery

定义硫族化物材料发现的反应路径

• 批准号: 2305731
• 负责人: Mercouri Kanatzidis
• 金额: $ 56.4万
• 依托单位: Northwestern University
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2023
• 资助国家: 美国
• 起止时间: 2023-09-15 至 2026-08-31
• 项目状态: 未结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=2305731&HistoricalAwards=false
• 关键词: Defining; Reaction; Paths; Chalcogenide; Materials

PART 1: NON-TECHNICAL SUMMARYThe use of new materials is essential for societal advancement, and solid state materials are critical to the modern economy. With this project, supported by the Solid State and Materials Chemistry Program in NSF’s Division of Materials Research, the principal investigator and his research group develop fundamental principles of synthesis and apply them to the chemistry of metal chalcogenides, which are important in various scientific investigations and technologies. Thereby they pursue challenging new directions, discover and synthesize new materials. The project focuses on controlling reactions leading to solid state chalcogenides to avoid known materials and studying their crystal structure, physical properties, and potential technological impact. This research challenges and enhances scientific understanding in this field of chemistry and improves existing technological applications while impacting new ones. For example, the reseach leads to the discovery of new atomic arrangements and novel semiconductors, quantum materials, and ion-exchange sorbent materials for environmental remediation. The project also significantly impacts the training, problem-solving abilities, and pedagogy of graduate students specializing in solid-state and materials synthesis. It aids in developing a competent workforce that comprehends the role of novel materials as catalysts for cutting-edge science and technology. Moreover, the project presents a range of opportunities for graduate and undergraduate students, particularly those from underrepresented communities, to acquire critical thinking skills that will advance scientific research in the future. PART 2: TECHNICAL SUMMARYThe project, supported by the Solid State and Materials Chemistry Program in NSF’s Division of Materials Research, addresses the development of tools, concepts, and reaction paths, both intellectual and experimental, to prepare new materials rationally. It is centered around fundamental science questions: (a) Can new semiconductors be designed by finding proper reaction paths? (b) Can insights from flux and non-flux reaction studies aid targeted synthesis? (c) Can distinct reaction paths be categorized for generalized synthetic methodologies? (d) Can chalcogenides' diverse motifs lead to enhanced properties? The research pursues new directions that have proven very challenging to date. For example, the pursuit of new phases by a) stuffing aristotype structures (in other words, to create new materials by inserting extra atoms in compounds possessing some of the most common structure types. Aristotype is a high-symmetry crystallographic structure type that can be viewed as an idealized version of a lower-symmetry structure), b) stabilizing novel tellurometallate building blocks in extended structures, c) developing synthesis of mixed anion compounds oxy-chalcogenides in a rational manner using a new kind of flux. These aspects represent the cutting edge of chalcogenide solid-state chemistry. They align with the principal investigator’s ongoing interest in novel physical properties of new compounds beyond mere structural characterizations. The benefits of a successful project are broad insights advancing the cutting edge of solid state and materials chemistry, the discovery of novel materials with attractive physical and chemical properties and potential applications, and new knowledge of reaction paths leading to new chalcogenides.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.

第1部分：非技术总结新材料的使用对于社会发展至关重要，固态材料对现代经济至关重要。在该项目的支持下，在NSF材料研究部的固态和材料化学计划的支持下，首席研究员及其研究小组开发了合成的基本原理，并将其应用于金属硫化基质化的化学，这在各种科学研究和技术中都很重要。因此，他们追求挑战新的方向，发现和综合新材料。该项目着重于控制导致固态葡萄核化的反应，以避免已知的材料并研究其晶体结构，物理特性和潜在的技术影响。这项研究挑战并增强了化学领域的科学理解，并在影响新技术的同时改善了现有的技术应用。例如，该研究导致发现新的原子布置和新颖的半导体，量子材料和离子交换材料，以进行环境修复。该项目还显着影响培训，解决问题的能力以及专门研究固态和材料合成的研究生的教学法。它有助于发展一个有能力的劳动力，该劳动力将新颖材料作为尖端科学和技术的催化剂的作用。此外，该项目为研究生和本科生提供了一系列机会，尤其是来自代表性不足的社区的学生，以获得批判性思维技能，这些技能将在未来推进科学研究。第2部分：技术总结项目，在NSF材料研究部的固态和材料化学计划的支持下，探讨了智力和实验性的工具，概念和反应路径的开发，以合理地准备新材料。它围绕基本科学问题：（a）新的半导体可以通过找到适当的反应路径设计吗？ （b）来自通量和非升压反应研究的见解有助于靶向合成吗？ （c）可以将不同的反应路径分类为广义合成方法吗？ （d）Chalcogenide的潜水基序能否导致增强的性质？该研究追求了迄今为止非常挑战的新方向。例如，a）通过a）填充雅里氏式结构（换句话说，通过在具有一些最常见的结构类型的化合物中插入额外的原子来创建新材料。Aristotype是一种高对称的晶体结构类型，可以将其视为理想的较低的构造构造的理想形式的构造构造的理想形式，b）稳定构造，b）使用一种新的通量以有理方式以合理的方式化合物。这些方面代表了硫酸硫化核化学固态化学的最前沿。他们与主要研究者对新化合物的新型物理特性的持续兴趣保持一致。成功项目的好处是广泛的见解，促进了固态和材料化学的最前沿，具有吸引人的物理和化学特性和潜在应用的新型材料的发现，以及对导致新的Chalcogenides的反应路径的新知识。该奖项反映了NSF的法定任务，并通过使用该基金会的知识优点和广泛影响来评估，认为这是通过评估来通过评估来获得的。