An “inherently chiral” 1,1′-bibenzimidazolium additive for enantioselective voltammetry in ionic liquid media
Articolo
Data di Pubblicazione:
2018
Citazione:
An “inherently chiral” 1,1′-bibenzimidazolium additive for enantioselective voltammetry in ionic liquid media / S. Rizzo, S. Arnaboldi, R. Cirilli, A. Gennaro, A.A. Isse, F. Sannicolò, P.R. Mussini. - In: ELECTROCHEMISTRY COMMUNICATIONS. - ISSN 1388-2481. - 89:(2018 Apr), pp. 57-61. [10.1016/j.elecom.2018.02.016]
Abstract:
A dialkyl-1,1′-bibenzimidazolium salt, consisting of an atropisomeric dication (i.e. featuring a stereogenic axis
and thus “inherently chiral”) and an achiral counteranion, is employed as a chiral additive in three commercial
ionic liquids, providing successful enantiodiscrimination in voltammetry experiments on screen-printed electrodes
(SPEs) with the enantiomers of N,N′-dimethyl-1-ferrocenyl-ethylamine as model chiral probes. Significant
differences in redox potentials are observed for the probe enantiomers despite the low concentration (0.01M) of
the chiral additive. The nature of the achiral ionic liquid in which the additive is employed significantly affects
the peak potentials and potential differences, but does not alter the enantiomer sequence.
Tipologia IRIS:
01 - Articolo su periodico
Keywords:
Chiral additives; Chiral electrochemistry and electroanalysis; Enantiorecognition; Inherent chirality; Ionic liquids
Elenco autori:
S. Rizzo, S. Arnaboldi, R. Cirilli, A. Gennaro, A.A. Isse, F. Sannicolò, P.R. Mussini
Link alla scheda completa:
Link al Full Text: