Anomalously Large Chiral Sensitivity in the Dissociative Electron Attachment of 10-Iodocamphor

Dreiling, Joan; Lewis, Frank W.; Mills, J. D.; Gay, T. J.

doi:10.1103/physrevlett.116.093201

Cited by 14 publications

(21 citation statements)

References 35 publications

(46 reference statements)

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“…Studies of the interactions between chiral molecules and SPEs have shown that both the scattering and the damage cross sections of chiral molecules can depend on electron spin. Self-assembled monolayers of double-stranded DNA are known to spin filter LEE, and an anomalously large chiral specificity has been observed in SPE interactions with gas-phase molecules such as 10-iodocamphor and bromochamphor . SD was shown in an earlier study of R - and S -2-butanol adsorbed on Permalloy, where differences in the absolute reaction cross sections of ∼10% were measured depending on the chirality of the molecule and the secondary electron helicity .…”

mentioning

confidence: 98%

Electron Spin-Polarization Dependent Damage to Chiral Amino Acid l-Histidine

Schaible

Rosenberg

Kundu

et al. 2020

J. Phys. Chem. Lett.

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The damage of approximately monolayer films of l-histidine by low-energy spin-polarized electrons (SPE) ejected from a magnetized cobalt substrate has been probed using X-ray photoelectron spectroscopy (XPS). Average damage cross sections for N-containing motifs of l-histidine are 25–30 and 2–5 Mb for zwitterions and neutral molecules, respectively. The magnetization direction of the substrate, which controls the ejected SPE helicity, was reversed in situ, and statistically significant differences in the damage cross sections of 10–30% were measured between positive and negative electron helicities. This is the first measurement of spin dichroism (SD) in an amino acid. The differential cross sections suggest that inelastic scattering of SPE with chiral molecules could contribute to the persistence of one enantiomer vs the other under certain irradiation conditions, particularly for the zwitterionic species.

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mentioning

confidence: 98%

Electron Spin-Polarization Dependent Damage to Chiral Amino Acid l-Histidine

Schaible

Rosenberg

Kundu

et al. 2020

J. Phys. Chem. Lett.

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“…Chiral molecules in the gas phase indeed show different cross sections for scattering of electrons with left-and right-handed helicity. 67 Experimental studies pioneered by Farago 68 on various molecules [69][70][71][72][73] have shown asymmetries of the order of 10 -3 or less and have indicated the importance of heavy atoms in the chiral molecules. The asymmetry roughly scales as Z 2 with Z the atomic number of the heaviest element in the molecules.…”

Section: Materials Advances Accepted Manuscriptmentioning

confidence: 99%

Consequences of chirality on the response of materials

Meskers

2022

Mater. Adv.

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“…A commonly used example in chemistry is that of liquid chromatography where an asymmetric (chiral) column packing material is used to separate asymmetric molecules via the interactions between the packed column and the solution-phase molecule. For a particle example of stereoselection (and stereorecognition) the recent work by Dreiling et al is of great importance [12][13][14]. In these experiments, oppositely polarized electrons selectively interact with one asymmetric form of a selected chiral gasphase molecule.…”

Section: Classification Of Beta Particle Interactions With Asymmetricmentioning

confidence: 99%

“…This interest extends to the other beta particle, the electron, and polarized electron experiments with asymmetric matter that have been recently appearing in the literature [12][13][14]. Of particular interest were positron annihilation experiments with chiral liquids and their frozen form [5] and experiments with amino acid powders to determine whether positrons could selectively destroy one amino acid enantiomeric form over the other [8][9][10].…”

Section: Introductionmentioning

confidence: 99%

Positron Annihilation Lifetime Analysis of Left- and Right-Handed Alanine Single Crystals

Eren

et al. 2017

Acta Phys. Pol. A

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Studies of the interaction of polarized light or particles (including electrons, e − , or positrons, e + ) with asymmetric forms of matter has been of interest to scientists since the discovery of chirality and the subsequent development of particle physics. Researchers have been interested in e + interactions with chiral molecules for decades, but with mixed and indecisive results. After reviewing the field, we speculated that the e + or positronium (Ps) might interact differently with chiral pairs of large single crystals, i.e., the left-handed or right-handed asymmetric forms of the crystals -and subsequently observed significant differences in "free positron" annihilation and intensities in the evaluation of left-handed or right-handed quartz single crystals. This result may be understood to be a "particle stereorecognition" phenomenon. To extend this line of inquiry we crystallized mm scale L-or D-alanine crystals and performed positron annihilation lifetime spectroscopy measurements using a 22 Na positron source. Alanine crystals were obtained via slow evaporation of water in a Dewar, or from water/acetone solvent in a temperature-controlled environment. These methods resulted in small (≈ 0.5 cm/side) or large (≥ 1.0 cm/side) crystals, respectively. While some intensity (I2) results from left-handed and right-handed crystals varied in positron annihilation lifetime spectroscopy analysis, the errors associated with the measurements do not indicate a stereorecognition of alanine via positron interactions.

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Anomalously Large Chiral Sensitivity in the Dissociative Electron Attachment of 10-Iodocamphor

Cited by 14 publications

References 35 publications

Electron Spin-Polarization Dependent Damage to Chiral Amino Acid l-Histidine

Electron Spin-Polarization Dependent Damage to Chiral Amino Acid l-Histidine

Consequences of chirality on the response of materials

Positron Annihilation Lifetime Analysis of Left- and Right-Handed Alanine Single Crystals

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