CAREER: Synthesis, Structures, and Properties of Crystalline Boron-Based Porous Materials

职业：结晶硼基多孔材料的合成、结构和性能

• 批准号: 0846958
• 负责人: Xianhui Bu
• 金额: $ 59.77万
• 依托单位: California State University-Long Beach Foundation
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 2009
• 资助国家: 美国
• 起止时间: 2009-02-01 至 2015-01-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0846958&HistoricalAwards=false
• 关键词: CAREER; Synthesis; Structures; Properties; Crystalline

TECHNICAL SUMMARY:The proposed research aims to develop a family of crystalline boron-imidazolate based nanoporous materials with compositional and topological features that mimic porous zeolites. These materials are unique because they are capable of integrating the advantages of coordination polymers (e.g., compositional and topological diversity) and covalent organic framework materials (e.g., lightweight). The synthetic strategy involves two major steps. The first is to create a library of boron-imidazolate molecular building blocks capable of serving as tetrahedral or trigonal vertices. These various pre-synthesized molecular building units will then be assembled with metal cations or clusters into three-dimensional infinite porous frameworks. This strategy is especially suited for the creation of ultra-light porous materials using the lightest possible elements from the periodic table (e.g., Li and B) and permits the development of materials with a variety of compositional and topological features. These crystalline porous materials will be structurally characterized and their various properties, particularly porosity and gas sorption characteristics, will be characterized to determine their application potentials in energy and environmental applications such as hydrogen storage, carbon dioxide sequestration, and selection gas separation. NON-TECHNICAL SUMMARY:The proposed research program aims to create a family of sponge-like porous materials for energy and environmental applications. Such materials may serve as high capacity adsorbents for on-board fuel storage or waste gas sequestration and they may also selectively trap toxic and radioactive metals for environmental remediation. The award will help the PI to design curricula and a range of research activities in solid state and materials chemistry that will provide training opportunities for undergraduate and graduate students, leading to publications and scholarly presentations involving these students. Because a large fraction of students in the PI's university and laboratory are from underrepresented groups, the program will broaden the participation of these students and promote diversity in solid state and materials research.

技术总结：所提出的研究旨在开发一系列基于结晶硼-咪唑盐的纳米多孔材料，其具有模拟多孔沸石的组成和拓扑特征。这些材料是独特的，因为它们能够整合配位聚合物的优点（例如，组成和拓扑多样性）和共价有机骨架材料（例如，轻量级）。合成策略包括两个主要步骤。第一个是创建一个库的硼咪唑分子构建块能够作为四面体或三角顶点。然后，这些各种预合成的分子构建单元将与金属阳离子或簇组装成三维无限多孔框架。这种策略特别适合于使用来自周期表的最轻的可能元素（例如，Li和B），并允许开发具有各种组成和拓扑特征的材料。这些结晶多孔材料将在结构上表征，并且它们的各种性质，特别是孔隙率和气体吸附特性，将被表征以确定它们在能量和环境应用中的应用潜力，例如储氢、二氧化碳封存和选择气体分离。非技术总结：拟议的研究计划旨在创建一个家庭的海绵状多孔材料的能源和环境应用。这种材料可以作为高容量吸附剂用于机载燃料储存或废气封存，并且它们还可以选择性地捕获有毒和放射性金属用于环境修复。该奖项将帮助PI设计课程和一系列固态和材料化学的研究活动，为本科生和研究生提供培训机会，导致涉及这些学生的出版物和学术演讲。由于PI大学和实验室的大部分学生来自代表性不足的群体，该计划将扩大这些学生的参与，促进固态和材料研究的多样性。