Intense chiroptical switching in a dicationic helicene-like derivative: exploration of a viologen-type redox manifold of a non-racemic helquat.
J Am Chem Soc
; 136(31): 10826-9, 2014 Aug 06.
Article
en En
| MEDLINE
| ID: mdl-24597856
Two-step redox switching in enantiopure helquat system [P-1](2+) â [P-1](â¢+) â [P-1](0) is demonstrated. The viologen-type electroactive unit embedded directly in the helical scaffold of 1 is responsible for the prominent chiroptical switching at 264 nm. This process is associated with a marked sign-reversal of Cotton effect ramping between Δε = +35 M(-1) cm(-1) for [P-1](2+) and Δε = -100 M(-1) cm(-1) for [P-1](0). This helically chiral system features the most intense chiroptical switch response documented in the field of helicenoids.
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1
Colección:
01-internacional
Base de datos:
MEDLINE
Idioma:
En
Revista:
J Am Chem Soc
Año:
2014
Tipo del documento:
Article
País de afiliación:
República Checa
Pais de publicación:
Estados Unidos