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Naphthyl-fused phosphepines: Luminescent contorted polycyclic P-heterocycles

Abstract : the article presents the synthesis of a new family of naphthyl-fused phosphepines through Ni-mediated CC coupling. Interestingly, the chloro-phosphine-oxide intermediate shows strong resistance toward oxidation/hydrolysis due to a combination of steric hindrance and pnictogen interactions. However it can undergo substitution reactions under specific conditions. The optical / redox properties and the electronic structure of these new $\pi$-systems were studied experimentally (UV-vis absorption, emission, cyclic voltammetry) and computationally (TD-DFT calculations, NICS investigation). Taking advantage of the luminescence of these derivatives, a blue emitting OLED has been prepared highlighting that these novel $\pi$-conjugated P-heterocycles appear as promising building blocks for solid-state lightning applications.
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Submitted on : Thursday, October 17, 2019 - 3:01:29 PM
Last modification on : Sunday, June 26, 2022 - 2:41:36 AM
Long-term archiving on: : Saturday, January 18, 2020 - 2:36:17 PM


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  • HAL Id : cea-02318890, version 1


Thomas Delouche, Réka Mokrai, Thierry Roisnel, Denis Tondelier, Bernard Geffroy, et al.. Naphthyl-fused phosphepines: Luminescent contorted polycyclic P-heterocycles. 2019. ⟨cea-02318890⟩



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