Porous Molecular Solids with Zero-Dimensional (0D) Pores

具有零维 (0D) 孔的多孔分子固体

• 批准号: 1610882
• 负责人: Kevin Holman
• 金额: $ 45.5万
• 依托单位: Georgetown University
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2016
• 资助国家: 美国
• 起止时间: 2016-09-01 至 2019-08-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1610882&HistoricalAwards=false
• 关键词: Porous; Molecular; Solids; Zero; Dimensional

NON-TECHNICAL SUMMARY: The processes currently employed for the separation of the chemical compounds required by our modern economy are responsible for a significant portion of our society's energy demands. A great deal of scientific effort is currently directed toward trying to minimize these demands by developing new sponge-like materials that can be employed in these separations, broadly via selective absorption of chemical compounds into the available pores. The funded project seeks to develop a novel class of relatively simple sponge-like solids, those that possess individual cavities as opposed to interconnected pores. The work is expected to advance our understanding of chemical confinement and permeability in molecular solids with broader implications in materials and separations science and green chemistry. The project will support the education of our next generation of materials scientists and will provide internship opportunities for promising, low-income high school students in the DC metro area. TECHNICAL SUMMARY: Microporous materials find a host of applications in industrial settings and open-pore structures, wherein pores are interconnected in one, two, or three dimensions, are the targets of much contemporary research in this area. The funded project will study and develop intrinsically zero dimensionally (0D) porous molecular solids in the context of the seemingly broad misconception that the pores of such materials are inactive as sorbents. The project aims to: i) conduct fundamental studies toward the understanding the factors that govern sorption/desorption kinetics (and thermodynamics) in 0D porous molecular solids, seeking to understand the influence of structure, atomic motion and disorder, sorbate affinity, sorbate properties, and defect density, on crystal permeability, ii) develop novel materials and methods for enhanced exchange in 0D porous molecular solids, seeking to expand the functionality of 0D porous materials such that they may be on par with traditional open-pore materials for chemical separations, and iii) exploit the confinement properties of certain 0D porous molecular solids for novel science and applications (e.g., the stabilization of reactive species, or storage of volatiles).

非技术性总结：目前用于分离我们现代经济所需的化合物的方法占我们社会能源需求的很大一部分。目前，大量的科学工作致力于通过开发新的海绵状材料来尽量减少这些需求，这些材料可以用于这些分离，广泛地通过将化合物选择性吸收到可用的孔隙中。该资助项目旨在开发一种新型的相对简单的海绵状固体，这些固体具有独立的空腔，而不是相互连接的孔隙。这项工作有望促进我们对分子固体中化学约束和渗透性的理解，并在材料和分离科学以及绿色化学中产生更广泛的影响。该项目将支持我们的下一代材料科学家的教育，并将提供实习机会，为有前途的，低收入的高中学生在华盛顿特区都会区。 技术概要：微孔材料在工业环境和开孔结构中有许多应用，其中孔在一维、二维或三维中互连，是该领域许多当代研究的目标。 该资助项目将研究和开发内在零维（0 D）多孔分子固体，这种材料的孔作为吸附剂是不活跃的，这似乎是一种广泛的误解。 该项目旨在：i）进行基础研究，以了解控制吸附/解吸动力学的因素（和热力学）在0 D多孔分子固体中，寻求理解结构、原子运动和无序、吸附剂亲和力、吸附剂性质和缺陷密度对晶体渗透性的影响，ii）开发用于在0 D多孔分子固体中增强交换的新材料和方法，寻求扩展0 D多孔材料的功能性，使得它们可以与用于化学分离的传统开孔材料相当，和iii）利用某些0 D多孔分子固体的限制性质用于新的科学和应用（例如，反应性物质的稳定或挥发物的储存）。