Abstract
Magnetoelectrolysis (electrolysis under magnetic fields) produces chiral surfaces on metal thin films, which can recognize the enantiomers of amino acids. Here, the chiral surface formation on copper films is reported in magnetoelectrochemical etching (MEE) at 5T with chloride additives. In the absence of additives, the surface chirality signs of MEE films depended on the magnetic field polarity. On the contrary, the MEE films prepared with the additives exhibited only d-activity in both magnetic field polarities. This result implies that the specific adsorption of chloride additives induces the chiral symmetry breaking for the magnetic field polarity.
Highlights
Recent findings of redox potentials on the mineral surfaces in deep-see hydrothermal fields imply that electrochemical reactions would make a considerable contribution to the molecular evolution of the early earth [1,2]
To explore the experimental conditions for the chiral symmetry breaking, in in this this study study we have have examined examined the the chloride chloride additive we additive effects effects on on the the surface surface chirality chirality in in the the magnetoelectrochemical etching (MEE)
The enantiomers on the film electrodes, according to which the films prepared under parallel enantiomers on the MEE film electrodes, according to which the MEE films prepared under parallel and antiparallel 5T magnetic field to the ionic currents are called +5T-film and −5T-film, respectively
Summary
Recent findings of redox potentials on the mineral surfaces in deep-see hydrothermal fields imply that electrochemical reactions would make a considerable contribution to the molecular evolution of the early earth [1,2]. The first one is termed a vertical MHD flow This is a macroscopic flow around the electrode edge, in which the ionic currents are not parallel to the magnetic field. The micro-MHD vortices could affect the growth of chiral screw dislocations and contribute to the chiral surface formation. This means that the chiral symmetry is broken for for magnetic field polarity This fact greatinterest interestininconnection connectionwith with the the homochirality homochirality of the the magnetic field polarity. To explore the experimental conditions for the chiral symmetry breaking, in in this this study study we have have examined examined the the chloride chloride additive we additive effects effects on on the the surface surface chirality chirality in in the the MEE.
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