Si(pincer)2 complexes are attractive candidates for organic electronic applications. The wide variety of pincer ligands provides synthetic tailorability of the electronic and optical properties. In this work, various alternatives of the parent complex Si(bzimpy)2 (2,6-bis(2-benzimidazolyl)pyridine = bzimpy) will be presented. All of the synthetic analogs of Si(bzimpy)2 so far are air/moisture stable and fluorescent in solution and the solid state. Analogs with alkyl or alkoxy substituents attached to the bzimpy framework are more soluble and easier to work with than the parent Si(bzimpy)2 complex. Thin films of the complexes can be grown using vacuum deposition, and prototype OLEDs containing Si(pincer)2 complexes have been fabricated. Electron mobilities of the Si(pincer)2 complexes have been measured and demonstrate that Si(pincer)2 complexes are efficient electron transport layers with electron mobilities comparable to or better than Alq3.

Hexacoordinate silicon complexes for applications in organic electronics

2019 Spring National Meeting

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