Chirality of magneto-electrodeposited metal film electrodes

Abstract

The chiral electrode behaviors of magneto-electrodeposited (MED) Ag and Cu films were examined for the electrochemical reactions of D-glucose, L-glucose and L-cysteine. The Ag and Cu films were electrodeposited under a magnetic field of 2 T parallel (+2 T) or antiparallel (-2 T) to the faradaic current. For MED films of both Ag and Cu, the oxidation current of L-glucose was larger than that of D-glucose on the +2 T-film electrodes, and the results were opposite on the - 2 T-film electrodes. These facts demonstrate that the MED metal films possess the ability of chiral recognition for D- and L-glucoses. The MED Ag film electrodes also exhibited chiral behavior for the oxidation of L-cysteine.

• chiral recognition
• magnetic field
• electrodeposition
• metal film

Acknowledgments

The MED experiments using a cryocooled superconducting magnet were performed in the High Field Laboratory for Superconducting Materials, IMR, Tohoku University. We thank Professor J-P Chopart of the University of Reims in France and Professor R Aogaki of Polytechnic University in Kanagawa for the illuminating discussion.