EAGER:Probing Oxygen Selectivity in a Flexible Metal-Organic Framework Using In Situ Spectroscopy

EAGER：利用原位光谱法探测柔性金属有机框架中的氧选择性

• 批准号: 1551119
• 负责人: Robert Rioux
• 金额: $ 10.39万
• 依托单位: Pennsylvania State Univ University Park
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2015
• 资助国家: 美国
• 起止时间: 2015-09-01 至 2017-08-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1551119&HistoricalAwards=false
• 关键词: EAGER; Probing; Oxygen; Selectivity; Flexible

Lueking155119Penn StateThe proposed work seeks to design a metal organic framework (MOF) that is oxygen-selective over nitrogen at near ambient temperatures. The combined studies will assess the feasibility of using a gas-selective, structural transformation as a means for separations of gases, with a specific focus on developing a material that retains oxygen selectivity at near-ambient temperatures. Oxygen, nitrogen, and air interaction with the oxygen-selective MOF will be investigated using a combination of in situ FTIR and Raman spectroscopy, as well as gas diffusivity and adsorption measurements. The spectroscopy studies will aim to understand which specific gas-substrate chemical interactions lead to an extended induction period to delay opening of the flexible framework. The diffusivity and adsorption measurements will elucidate how this is influenced by a secondary component that drastically differs in affinity to open the structure. Developing a chemical understanding of the specific gas-surface interaction that leads to rapid opening will enable the incorporation of chemical specificity into future material design.

Lueking155119Penn统计提议的工作旨在设计一种金属有机框架（MOF），该框架是氧气选择性在近乎环境温度下的氮选择性的。合并的研究将评估使用气体选择性结构转化作为分离气体的手段的可行性，并特别着重于开发在近气温下保持氧气选择性的材料。将使用原位FTIR和拉曼光谱的组合研究氧，氮和与氧选择MOF的空气相互作用，以及气体扩散率和吸附测量。光谱研究将旨在了解哪种特定的气体基层化学相互作用导致延长的诱导期，以延迟柔性框架的开放。扩散率和吸附测量将阐明这是如何受到二级成分的影响，该次要成分在亲和力上截然不同，以打开结构。对特定气体表面相互作用的化学理解，从而导致快速开放的情况，将使化学特异性融入未来的材料设计中。