Dual Redox and Optical Control of Chiroptical Activity in Photochromic Dithienylethenes Decorated with Hexahelicene and Bis-Ethynyl-Ruthenium Units
Résumé
We describe the synthesis of mono- and bis([6]helicene-≡-Ru(dppe)2-≡)-DTE complexes 1o,c and 2o,c. The photo-chromic and electrochromic properties were studied and attractive isomerization processes were observed, ie. spontaneous reopening of [1c] ·+ to [1o] ·+ and ring closure of [2o] 2+ to [2c] 2+. Due to strong chiroptical responses, all these chiral complexes correspond to new types of chiroptical switches (triggered by light and/or redox stimuli) and could be described as either " NOR " or " OR " logic gates.
Domaines
Chimie organiqueOrigine | Fichiers produits par l'(les) auteur(s) |
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