Synthesis of Luminescent Group 14 Compounds

在这个由化学系化学合成计划资助的项目中，密苏里大学圣彼得堡分校的珍妮特·布拉多克-威尔金教授。Louis正在开发合成策略，以制备含有硅(Si)和锗(Ge)的荧光分子。这些分子具有促进固态强发光的结构特征。通过对这些化合物结构的修饰，可以开发出能够发出蓝色、绿色或红色光的空气稳定分子，用于固态应用，例如，作为屏幕显示器(有机发光二极管)和太阳能电池的组件。本项目重点研究金属醇类、二苯并金属烯类和荧光素的硅和锗衍生物的五元和六元碳环结构中包含硅和锗中心的环状化合物的合成途径。分子的独特光电性质与其结构有关，并通过结合连接到环结构上的各种共轭外围基团进行微调。通过多核核磁共振和红外光谱、质谱学、紫外可见光谱和荧光光谱、元素分析、循环伏安法和X射线结晶学等手段对新分子进行了表征。布拉多克-威尔金教授继续致力于培养和指导女本科生和研究生。此外，她目前是圣路易斯ACS部女化学家委员会的联合主席。这项工作的更广泛影响包括为电致发光固态应用中的组件发现稳定和有效的发光化合物所产生的社会效益，以及对本科生和研究生进行关于制备发光含硅和含锗环化合物的合成和特征技术的培训。

In this project, funded by the Chemical Synthesis Program of the Chemistry Division, Professor Janet Braddock-Wilking of the University of Missouri-St. Louis is developing synthetic strategies for the preparation of fluorescent molecules containing silicon (Si) and germanium (Ge). These molecules have structural features that promote strong light emission in the solid state. Modification of the structure of these compounds allows for the development of air-stable molecules that emit blue, green, or red light for solid-state applications, for example, as components for screen displays (organic light emitting diodes) and solar cells.This project focuses on the synthetic pathways for the preparation of cyclic compounds containing silicon and germanium centers incorporated into five- and six-membered carbon-based ring structures of Si and Ge derivatives of metallaloles, dibenzometalloles, and fluorescein. The unique optoelectronic properties of the molecules are associated with their structures and are fine-tuned by incorporating a variety of conjugated peripheral groups attached to the ring structure. The new molecules are being characterized by multinuclear NMR and IR spectroscopies, mass spectrometry, UV-Vis and fluorescence spectroscopies, elemental analysis, cyclic voltammetry, and X-ray crystallography, when possible. Professor Braddock-Wilking continues to devote efforts to train and mentor female undergraduate and graduate students. In addition, she is currently the co-chair of the St. Louis ACS Section Women Chemists Committee. The broader impacts of this work include societal benefits resulting from the discovery of stable and efficient luminescent compounds for components in electroluminescent solid-state applications as well as the training of undergraduate and graduate students on the synthetic and characteristic techniques utilized in the preparation of the luminescent silicon- and germanium-containing cyclic compounds.