CAREER: Solid State Chemistry of Unusual Zintl Phases and Polar Intermetallics

小行星9733587 该提案的研究部分旨在研究调整Zintl相和层状金属间氧化物的电子结构和性质的方法。 该研究计划概述了独特的策略：1）应用和评估Zintl概念及其限制，以合成“缺电子”Zintl相-一类新的无机π系统; 2）通过使用层状金属间化合物和氧化物结构，以合理的构建块多层方法设计和合成新的复杂层状金属间化合物-氧化物共生结构。 由于独特的结构和性能在正常Zintl相和极性金属间化合物中已经很明显，预计探索性合成和表征将产生不寻常的晶体化学和新的物理性能。 这些不寻常的材料代表了一类有前途的电子和磁性材料，其潜在性质包括半导体，热电，超导体和巨磁阻。 本研究的总体目标是建立有用的结构（化学键）-性质关系，并提高我们对金属和非金属之间区域的化学理解。 该建议的教育计划包括研究生和本科生课程的开发，强调材料化学，无机固态化学和元素描述化学的重要性。本科生和研究生培训将通过与其他教育机构和工业研究团体的合作活动得到补充。 合成新材料以及理解、控制和预测固体结构和性质的挑战继续推动着对与工业部门相关的新技术材料的研究。 发现新的材料类别，如Zintl化合物，以及对其不同性质的更深入了解，以及其开发和应用的影响，构成了在固态化学和材料科学这一前沿领域开发的本科教育活动的基础。 ***

9733587 Guloy The research component of this proposal aims to investigate ways to tune the electronic structure and properties of Zintl phases and layered intermetallic oxides. The research plan outlines unique strategies to: 1) apply and assess the Zintl concept and its limits to the synthesis of `electron-deficient' Zintl phases - a new class of inorganic pi-systems; 2) design and synthesize new complex layered intermetallic-oxide intergrowth structures by using layered intermetallic and oxide structures in a rational building-block-multilayer approach. Since unique structures and properties are already apparent in normal Zintl phases and polar intermetallics, it is anticipated that exploratory synthesis and characterization will produce unusual crystal chemistry and novel physical properties. These unusual materials represent a promising class of electronic and magnetic materials with potential properties ranging from semiconductors, thermoelectrics, superconductors and giant magnetoresistance. The general aim of this research is to establish useful structure(chemical bonding)-property relationships and to improve our chemical understanding of the region between metals and nonmetals. The educational plan of this proposal includes the development of courses in graduate and undergraduate levels that will emphasize the importance of materials chemistry, inorganic solid state chemistry, and descriptive chemistry of the elements. Undergraduate and graduate training will be supplemented by collaborative activities with other educational institutions and industrial research groups. %%% The challenge to synthesize new materials and understand, control and predict the structures and properties of solids continues to fuel the search for new technological materials of relevance to the industrial sector. The discovery of new classes of materials such as the Zintl compounds, together with a deeper understanding of their diverse properties, and the impact of their development and application forms the basis for undergraduate eductaion activities being developed in this cutting-edge area of solidstate chemistry and materials science. ***