Exploring the Solid-State Properties of Phosphine Coordination Materials

探索磷化氢配位材料的固态性质

• 批准号: 1506694
• 负责人: Simon Humphrey
• 金额: $ 42万
• 依托单位: University of Texas at Austin
• 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: 2015-08-15 至 2019-06-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1506694&HistoricalAwards=false
• 关键词: Exploring; Solid; State; Properties; Phosphine

Non-Technical SummaryThis project involves the preparation of a new family of crystalline porous materials that display desirable properties, which can be exploited in a range of applications relating to energy and the environment. Porous materials are of critical importance in many large-scale processes, such as water purification, the separation and purification of gases, polymer synthesis, environmental protection by trapping of toxic chemicals in waste streams, and many others. It is important to explore the synthesis of new porous materials that can be designed to offer enhanced properties. With support of the Solid State and Materials Chemistry Program in the Division of Materials Research, the major goals of this research activity directly relate to this challenge, and include the synthesis and application testing of new materials that incorporate previously unexplored chemical functionalities. This project incorporates a new and innovative international student exchange program, which is aimed at inspiring undergraduate students to become engaged in research-based studies. The program also provides students a unique and invaluable opportunity to become fully acquainted with the culture of international collaboration in the sciences, through a period of study abroad at one of several outstanding partner universities across the globe.Technical SummaryThe goals of this research activity involve the preparation of a new family of metal-organic framework (MOF) materials, using a specific synthetic strategy that provides access to materials with previously inaccessible chemical reactivity. MOFs are crystalline, polymeric solids that contain precise molecular architectures and exhibit inter-connected networks of small pores (0.5-5.0 nm), which are accessible to a broad range of 'guest' adsorbates. MOFs have already shown great promise as materials for high capacity gas storage, and for sequestration of small molecules and other species such as heavy metal ions. Their broad applicability is derived from extreme design flexibility, as a function of the components used in their preparation. The Humphrey group has established synthetic approaches to prepare MOFs based on tailored organophosphine and metallic complexes based on phosphine ligands. Phosphine-based complexes are important as reactive catalytic species that can induce small molecule activation; it is therefore of timely interest to incorporate such reactivity into MOF-type materials. In this project, phosphine complexes with well-defined open (unsaturated) metal sites are first synthesized and then used to construct porous MOFs. Subsequently, these materials are studied under a range of conditions to assess the binding and selective sequestration behavior toward guest species of direct relevance to future energy applications, and for molecular sensing. The project is ideally suited to teach young researchers a range of skills from molecular synthesis to solid-state materials chemistry and characterization.

非技术摘要项目涉及准备新的结晶多孔材料家族，这些材料显示出理想的特性，可以在与能源和环境有关的一系列应用中利用。 多孔材料在许多大规模过程中至关重要，例如水净化，气体的分离和纯化，聚合物合成，通过捕获有毒化学物质在废物流中的环境保护以及许多其他方法。 探索可以设计以提供增强特性的新多孔材料的合成非常重要。 在材料研究部中的固态和材料化学计划的支持下，本研究活动的主要目标与这一挑战直接相关，并包括合成以前未开发的化学功能的新材料的合成和应用测试。 该项目纳入了一项新的创新国际学生交流计划，该计划旨在激发本科生从事基于研究的研究。该计划还为学生提供了一个独特而有价值的机会，可以通过在全球几个杰出的合作伙伴大学中的一所杰出合作伙伴大学之一的出国留学期间完全熟悉国际合作的文化。技术总结本研究活动的目标涉及准备一种新的金属有机框架（MOF）材料的新家族，以前使用一种适用于特定综合材料的材料的新家族。 MOF是晶体，聚合物固体，其中包含精确的分子体系结构，并具有小毛孔（0.5-5.0 nm）的相互连接网络，这些网络可用于广泛的“来宾”崇拜者。 MOF已经表现出很大的希望，作为高容量存储的材料，以及隔离小分子和其他物种（例如重金属离子）的材料。 它们的广泛适用性来自极端设计灵活性，这是制备中使用的组件的函数。 汉弗莱组已经建立了基于量身定制的有机膦和金属络合物基于磷酸配体的金属蛋白配合的MOF的合成方法。 基于磷酸的复合物是可以诱导小分子激活的反应性催化物种。因此，将这种反应性纳入MOF型材料是及时的兴趣。 在这个项目中，首先合成具有定义明确的开放（不饱和）金属位点的磷酸复合物，然后用于构造多孔MOF。 随后，在一系列条件下研究了这些材料，以评估与未来能量应用和分子传感直接相关的客人的结合和选择性隔离行为。 该项目非常适合教年轻研究人员从分子合成到固态材料化学和表征的一系列技能。