Compounds with Multiply Bonded Ligands as Luminescent Chromophores

韦恩州立大学化学系的达里尔·威廉姆斯博士是 由无机，生物无机和有机物计划支持， 化学部根据研究规划补助金，发展高 作为发色团的氧化态有机金属化合物。 化合物 含有钽和钨结合到氮化物，亚烷基，亚氨基， 氧代和氧代配体将被合成，并且反应性 将探索它们的电子激发态。 目标是 检查决定金属配体强度的因素 多重键和吸收和发射数据与 这种互动。 最终，这些信息将用于控制 并利用这些键设计发光化合物。这些规划 活动将通过提供基础，促进威廉博士的职业生涯， 准备一个有竞争力的NSF研究提案， 完成这项研究计划补助金。 含有金属钽和钨的化合物将在 所述多个键可以形成到氧、氮和碳原子。 这些化合物具有发光性质，可以通过以下方式来控制： 取代基与金属和多键原子键合。 本文研究了一系列具有不同分子量的三聚体的电子结构和激发态反应活性， 将研究这些化合物。 这些潜在优势 与目前可用的系统相比， 发光特性。

Dr. Darryl Williams, Department of Chemistry, Wayne State University, is supported by the Inorganic, Bioinorganic, and Organometallic Program of the Chemistry Division under a Research Planning Grant to develop high oxidation state organometallic compounds as chromophores. Compounds containing tantalum and tungsten bound to nitrido, alkylidyne, imido, oxo, and cyclopentadienyl ligands will be synthesized, and the reactivity of their electronic excited states will be explored. The goal is to examine the factors which determine the strength of the metal-ligand multiple bond and the relationship of absorption and emission data to this interaction. Ultimately, this informaton will be used to control and design luminescent compounds using these linkages. These planning activities will advance Dr. William's career by providing a basis for preparing a competitive NSF research proposal subsequent to the completion of this Research Planning Grant. Compounds containing the metals tantalum and tungsten will be prepared in which multiple bonds can be formed to oxygen, nitrogen and carbon atoms. These compounds have luminescent properties which can be manipulated by the substituents bound to the metal and to the multiply bonded atoms. The electronic structure and excited state reactivities of a series of these compounds will be investigated. The potential advantage of these systems over those currently available is a higher degree of control over the luminescent properties.