Chirality – Beyond the Structural Effects

Naaman, Ron

doi:10.1002/ijch.201600102

Cited by 10 publications

(8 citation statements)

References 39 publications

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“…In recent years, it was determined that electron spin is related to spin‐selective electron transport through chiral molecules. This phenomenon is known as the chiral‐induced spin selectivity (CISS) effect . It has also been determined that, when chiral molecules are polarized by applying an electric field, the charge reorganization is accompanied by spin polarization of the electrons .…”

Section: Figurementioning

confidence: 99%

Magnetless Device for Conducting Three‐Dimensional Spin‐Specific Electrochemistry

et al. 2017

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Electron spin states play an important role in many chemical processes. Most spin-state studies require the application of a magnetic field. Recently it was found that the transport of electrons through chiral molecules also depends on their spin states and may also play a role in enantiorecognition. Electrochemistry is an important tool for studying spin-specific processes and enantioseparation of chiral molecules. A new device is presented, which serves as the working electrode in electrochemical cells and is capable of providing information on the correlation of spin selectivity and the electrochemical process. The device is based on the Hall effect and it eliminates the need to apply an external magnetic field. Spin-selective electron transfer through chiral molecules can be monitored and the relationship between the enantiorecognition process and the spin of electrons elucidated.

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Section: Figurementioning

confidence: 99%

Magnetless Device for Conducting Three‐Dimensional Spin‐Specific Electrochemistry

et al. 2017

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“…[6] In recent years, it was determined that electron spin is related to spinselective electron transport through chiral molecules.T his phenomenon is known as the chiral-induced spin selectivity (CISS) effect. [7,8] It has also been determined that, when chiral molecules are polarized by applying an electric field, the charge reorganization is accompanied by spin polarization of the electrons. [9] Theactual chirality of the enantiomer defines which spin direction is associated with which electric pole.…”

mentioning

confidence: 99%

Magnetless Device for Conducting Three‐Dimensional Spin‐Specific Electrochemistry

et al. 2017

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Electron spin states play an important role in many chemical processes.M ost spin-state studies require the application of am agnetic field. Recently it was found that the transport of electrons through chiral molecules also depends on their spin states and may also play ar ole in enantiorecognition. Electrochemistry is an important tool for studying spinspecific processes and enantioseparation of chiral molecules.A new device is presented, which serves as the working electrode in electrochemical cells and is capable of providing information on the correlation of spin selectivity and the electrochemical process.The device is based on the Hall effect and it eliminates the need to apply an external magnetic field. Spinselective electron transfer through chiral molecules can be monitored and the relationship between the enantiorecognition process and the spin of electrons elucidated.

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“…Indeed, a more or less expressed enantioselective interaction between organic matter and various physical fields and elementary particle beams seems to be a much more common phenomenon than has been earlier expected. Just to mention that electron transmission through chiral molecules was found to depend on the electron spin, and thin films of chiral compounds, in particular nucleic acids and peptides, have been shown to act as spin filters, as summarized in the recent review [33].…”

Section: Origins Of Extraterrestrial Non-racemic Organic Mattermentioning

confidence: 99%

Biological Homochirality on the Earth, or in the Universe? A Selective Review

Davankov

2018

Symmetry

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The discovery of meteoritic alpha-amino acids with significant enantiomeric excesses of the L-form has suggested that some cosmic factors could serve as the initial source for chiral imbalance of organic compounds delivered to the early Earth. The paper reviews major hypothesis considering the influence of chiral irradiation and chiral combinations of physical fields on the possible ways asymmetric synthesis and transformations of organics could take place within the solar system. They could result in a small enantiomeric imbalance of some groups of compounds. More attention is paid to the hypothesis on parity violation of weak interaction that was supposed to cause homochirality of all primary particles and a more significant homochirality of compounds directly synthesized from the latter in a plasma reactor. The first experiment with material synthesized in a plasma torch resulting from a super-high-velocity impact showed formation of alanine with the excess of L-form between 7 and 25%. The supposed conclusion is that L-amino acids could serve as a starting homochiral biomolecular pool for life to emerge all over the Universe.

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Chirality – Beyond the Structural Effects

Cited by 10 publications

References 39 publications

Magnetless Device for Conducting Three‐Dimensional Spin‐Specific Electrochemistry

Magnetless Device for Conducting Three‐Dimensional Spin‐Specific Electrochemistry

Magnetless Device for Conducting Three‐Dimensional Spin‐Specific Electrochemistry

Biological Homochirality on the Earth, or in the Universe? A Selective Review

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