Dynamic Component Exchange in Hybrid Nanomaterials

混合纳米材料中的动态成分交换

• 批准号: 1262226
• 负责人: Seth Cohen
• 金额: $ 69.3万
• 依托单位: University of California-San Diego
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 2013
• 资助国家: 美国
• 起止时间: 2013-03-01 至 2016-02-29
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1262226&HistoricalAwards=false
• 关键词: Dynamic; Component; Exchange; Hybrid; Nanomaterials

TECHNICAL SUMMARYThe focus of this research program, supported by the Solid State and Materials Chemistry program, is to explore dynamic component exchange (DCE) in metal-organic framework (MOF) materials. While many studies suggest that some MOFs are 'inert' to certain solvents and reagents (e.g. acids), it has been discovered that such materials can undergo ligand exchange reactions (i.e. DCE) even under mild conditions. This discovery was initially made by utilizing aerosol time-of-flight mass spectrometry (ATOFMS) to analyze the composition of individual MOF microcrystals. These studies were the first use of ATOFMS in materials science (including nanomaterials) and are part of a unique collaboration between synthetic inorganic and analytical environmental chemistry at the U.C. San Diego. This research program will study DCE in detail, to identify which MOFs readily undergo DCE and to understand the mechanism of the DCE process. This program will also utilize DCE as a methodology for functionalization of MOFs and to determine whether DCE can involve both ligand and metal ion exchange. Finally, this project will further develop ATOFMS methods to quantify DCE and to broaden the analytical use of this method for nanomaterials. The preliminary findings to date demonstrate that DCE is an important phenomenon that is more common among MOFs and other nanomaterials than previously recognized. The discoveries made in this research program will have important implications for the use of MOFs in technological applications.NON-TECHNICAL SUMMARYNew materials are essential for the advancement of many technological fields including medicine, renewable energy, aerospace engineering, and others. This research program is investigating a new class of porous materials and how they can be tailored for specific applications. These new porous materials act as high-tech 'sponges' that can 'soak up' other ions or molecules. As such, they may find use in fuel cells, batteries, and other important applications. As part of a broader outreach and educational mission, this proposal will support the Science Policy Internship Program (SPIP), a unique internship program, which sends STEM undergraduate students to Washington D.C. to learn about the interface of science and public policy.

技术总结该研究计划的重点在固态和材料化学计划的支持下，是在金属有机框架（MOF）材料中探索动态成分交换（DCE）。 尽管许多研究表明，某些MOF对某些溶剂和试剂（例如酸）​​“惰性”，但已经发现，即使在轻度条件下，此类材料也可以经历配体交换反应（即DCE）。 该发现最初是通过使用气溶胶飞行时间质谱法（ATOFM）来分析单个MOF微晶组成而进行的。 这些研究是材料科学（包括纳米材料）中首次使用ATOFM，并且是U.C.合成无机环境化学之间独特合作的一部分。圣地亚哥。 该研究计划将详细研究DCE，以确定哪些MOF容易接受DCE并了解DCE过程的机制。 该程序还将利用DCE作为MOF功能化的方法，并确定DCE是否涉及配体和金属离子交换。 最后，该项目将进一步开发ATOFMS方法来量化DCE并扩大该方法对纳米材料的分析使用。 迄今为止的初步发现表明，DCE是一种重要的现象，在MOF和其他纳米材料中比以前认识到的更常见。 该研究计划中提出的发现将对在技术应用中使用MOF具有重要意义。Non-Technical SummaryNew材料对于许多技术领域的发展至关重要，包括医学，可再生能源，航空航天工程等。 该研究计划正在研究一类新的多孔材料，以及如何针对特定应用程序量身定制。 这些新的多孔材料充当了可以吸收其他离子或分子的高科技“海绵”。 因此，他们可能会在燃料电池，电池和其他重要应用中找到使用。 作为更广泛的外展和教育任务的一部分，该提案将支持科学政策实习计划（SPIP），这是一项独特的实习计划，该计划将STEM本科生送往华盛顿特区，以了解科学与公共政策的界面。