Measuring the Spin‐Polarization Power of a Single Chiral Molecule

The electronic spin filtering capability of a single chiral helical peptide is measured. A ferromagnetic electrode source is employed to inject spin‐polarized electrons in an asymmetric single‐molecule junction bridging an α‐helical peptide sequence of known chirality. The conductance comparison bet...

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Published inSmall (Weinheim an der Bergstrasse, Germany) Vol. 13; no. 2; pp. np - n/a
Main Authors Aragonès, Albert C., Medina, Ernesto, Ferrer‐Huerta, Miriam, Gimeno, Nuria, Teixidó, Meritxell, Palma, Julio L., Tao, Nongjian, Ugalde, Jesus M., Giralt, Ernest, Díez‐Pérez, Ismael, Mujica, Vladimiro
Format Journal Article
LanguageEnglish
Published Germany Wiley Subscription Services, Inc 01.01.2017
Subjects
alpha‐helical peptides
Amino Acid Sequence
Asymmetry
chiral transport
Conductance
Electric Conductivity
Electrodes
Electron spin
Electronics
Electrons
Filtering
Gold - chemistry
Isomers
Nanotechnology
Nickel - chemistry
Peptides
Peptides - chemistry
single‐molecule wires
Spin Labels
spin‐polarization power
spin‐polarized transmission
Stereoisomerism
alpha-helical peptides
spin-polarization power
chiral transport
single-molecule wires
spin-polarized transmission
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Summary:The electronic spin filtering capability of a single chiral helical peptide is measured. A ferromagnetic electrode source is employed to inject spin‐polarized electrons in an asymmetric single‐molecule junction bridging an α‐helical peptide sequence of known chirality. The conductance comparison between both isomers allows the direct determination of the polarization power of an individual chiral molecule.
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ISSN:1613-6810
1613-6829
DOI:10.1002/smll.201602519