Low-Temperature Topotactic Strategies for the Directed Synthesis of New Layered Oxides

本项目将开发一系列低温拓扑合成策略。 它将集中在（1）拓扑结构策略，以诱导各种化合物（如钙钛矿）中的混合价态，其中离子可交换阳离子可以通过拓扑结构方法制成混合价态或进一步操纵其价态;（2）已知的金属-阴离子阵列化合物在钙钛矿主体内的组装;（3）合成新的主体材料，如层状钙钛矿，旨在利用所提出的策略;和（4）开发新的合成策略。新型合成路线的开发对于发现具有上级性质的新型层状材料是重要的，所述新型层状材料在诸如健康、能源、环境以及电子和通信的不同领域中对日常活动具有影响。 此外，基础科学的这一领域是教育未来科学家和工程师的理想培训基地。

This project will develop a series of low-temperature topotactic synthetic strategies. It will focus on (1) topotactic strategies to induce mixed valency in a variety of compounds, such as the perovskites, with ion exchangeable cations that can be made mixed valent or have their valency further manipulated by topotactic methods; (2) the assembly of known compounds of metal-anion arrays within perovskite hosts; (3) the synthesis of new host materials such as layered perovskites designed to exploit the proposed strategies; and (4) the development of new synthetic strategies.%%%The development of novel synthetic routes is important to the discovery of new classes of layered materials with superior properties that have impact on everyday activities in diverse areas such as health, energy, environment, and electronic and communications. Furthermore, this area of fundamental science is an ideal training ground for educating future scientists and engineers.***