π-Extended Phosphepines: Redox and Optically Active P-Heterocycles with Nonplanar Framework
2019
Delouche, Thomas | Mocanu, Anabella | Roisnel, Thierry | Szűcs, Rózsa | Jacques, Emmanuel | Benkő, Zoltán | Nyulászi, László | Bouit, Pierre-Antoine | Hissler, Muriel
In this letter, we present the synthesis of a new family of π-extended dithieno[b,f]phosphepines. The Pd-catalyzed direct arylation allows the introduction of various substituents, which tune the absorption/emission in the visible range as well as the redox properties. All those modifications were rationalized through DFT calculations. The physical properties of ambipolar phosphepine with diphenylamino substituents inspired us to use it as a semiconductor in p-type organic field-effect transistors (OFETs).
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