The Molecular Precursor Strategy for Production of Solid State Materials

这笔资金由化学特别项目和材料研究部共同资助，为教授的研究提供支持。考尔顿和奇泽姆在印第安纳大学。这项研究的目的是将分子无机化学和金属有机化学原理应用于合成有用的固态材料，如金属碳化物、氮化物和高温超导氧化物。碳化物和氮化物可以通过分子碳化物和氮化物的转化，或者通过热或光化学方法将碳氢化合物或氨基配体转化为这些原子基团来制造。通过钨醇键与表面羟基的缩合反应，提出了碳化钨表面包覆的方法。氧化物超导体的分子前驱体将由铜、钡和钇的醇氧化物缩合而成，在某些情况下，还会添加氧和过氧基。烷氧基到氧代配体的最终转化将通过热、水解、光化学以及使用超声波或电子转移氧化来实现。有机配体将在分子前驱体中进行优化，最终转化为固体材料。

This grant, funded jointly by Special Projects in Chemistry and the Division of Materials Research provides support for the research of Profs. Caulton and Chisholm at the University of Indiana. The objective of the research is to apply the principles of molecular inorganic and organometallic chemistry to the synthesis of useful solid-state materials such as metal carbides, nitrides and high temperature superconducting oxides. The carbide and nitrides can be made by conversion of molecular carbides and nitrides or by converting hydrocarbyl or amido ligands to these atomic groups by thermal or photochemical methods. Surface coating with tungsten carbide is proposed via condensation of tungsten alkoxide bonds with surface hydroxyl groups. Molecular precursors to oxide superconductors will be made by condensing copper, barium and yttrium alkoxides, in certain cases augmented by oxo and peroxo-ligands. The final conversion of alkoxo to oxo ligands will be effected thermally, hydrolytically, photochemically and by using ultrasound or electron-transfer oxidation. The organic ligands will be optimized in the molecular precursors for the final conversion to the solid materials.