Bis-4-aza[6]helicene: a bis-helicenic 2,2'-bipyridine with chemically-triggered chiroptical switching activity - Archive ouverte HAL Accéder directement au contenu
Article Dans Une Revue Journal of Organic Chemistry Année : 2019

Bis-4-aza[6]helicene: a bis-helicenic 2,2'-bipyridine with chemically-triggered chiroptical switching activity

Résumé

A novel enantiopure bis-helicenic 2,2'-bipyridine system was prepared using a Negishi coupling. Thanks to the bipyridine unit, the coordination with ZnII and protonation processes were studied revealing efficient tuning of photophysical (UV/Visible and emission) and chiroptical properties (electronic circular dichroism and circularly polarized emission) of the system. The coordination/decoordination and protonation/deprotonation processes appeared reversible thus constituting novel chiroptical switches.

Domaines

Chimie organique
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Dates et versions

hal-02094995 , version 1 (10-04-2019)
hal-02094995 , version 2 (24-06-2019)

Identifiants

Citer

Helena Isla, Nidal Saleh, Jiang-Kun Ou-Yang, Kais Dhbaibi, Marion Jean, et al.. Bis-4-aza[6]helicene: a bis-helicenic 2,2'-bipyridine with chemically-triggered chiroptical switching activity. Journal of Organic Chemistry, 2019, 84 (9), pp.5383-5393. ⟨10.1021/acs.joc.9b00389⟩. ⟨hal-02094995v2⟩
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