Development of hexacoordinate silicon complexes to be used in OLEDs and spintronics technology
Organic light emitting diodes, and spintronics are popular technologies that are widely usedin modern life. There are still many issues with device performance, cost, and safety. Hexacoordinate silicon complexes based on dianionic pincer ligands are great candidatesfor luminescent and electronic applications. Wide variety of pincer ligands provides tailorability of the electronic properties, while the hexacoordinate silicon center enforces a rigid planar environment that improves luminescence properties. As an example of such compounds Si(bzimpy-2H)2 was synthesized, and fully characterized. It is stable in air and exhibits fluorescence properties in solution and solid state, thus allowing device assembly and testing to be pursued. However, this compound has poor solubility in most solvents, which creates challenges. The methylated analog, is under development and appears to be more soluble, while still fluorescent. Si(bzimpy-2H)2 was a suitable probe to test predicted properties, and serve as a guide for the future of this project.