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Cold denaturation induces inversion of dipole and spin transfer in chiral peptide monolayers
Chirality-induced spin selectivity is a recently-discovered effect, which results in spin selectivity for electrons transmitted through chiral peptide monolayers. Here, we use this spin selectivity to probe the organization of self-assembled α-helix peptide monolayers and examine the relation betwee...
Autores principales: | , , , , , , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
Nature Publishing Group
2016
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4773432/ https://www.ncbi.nlm.nih.gov/pubmed/26916536 http://dx.doi.org/10.1038/ncomms10744 |
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author | Eckshtain-Levi, Meital Capua, Eyal Refaely-Abramson, Sivan Sarkar, Soumyajit Gavrilov, Yulian Mathew, Shinto P. Paltiel, Yossi Levy, Yaakov Kronik, Leeor Naaman, Ron |
author_facet | Eckshtain-Levi, Meital Capua, Eyal Refaely-Abramson, Sivan Sarkar, Soumyajit Gavrilov, Yulian Mathew, Shinto P. Paltiel, Yossi Levy, Yaakov Kronik, Leeor Naaman, Ron |
author_sort | Eckshtain-Levi, Meital |
collection | PubMed |
description | Chirality-induced spin selectivity is a recently-discovered effect, which results in spin selectivity for electrons transmitted through chiral peptide monolayers. Here, we use this spin selectivity to probe the organization of self-assembled α-helix peptide monolayers and examine the relation between structural and spin transfer phenomena. We show that the α-helix structure of oligopeptides based on alanine and aminoisobutyric acid is transformed to a more linear one upon cooling. This process is similar to the known cold denaturation in peptides, but here the self-assembled monolayer plays the role of the solvent. The structural change results in a flip in the direction of the electrical dipole moment of the adsorbed molecules. The dipole flip is accompanied by a concomitant change in the spin that is preferred in electron transfer through the molecules, observed via a new solid-state hybrid organic–inorganic device that is based on the Hall effect, but operates with no external magnetic field or magnetic material. |
format | Online Article Text |
id | pubmed-4773432 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2016 |
publisher | Nature Publishing Group |
record_format | MEDLINE/PubMed |
spelling | pubmed-47734322016-03-04 Cold denaturation induces inversion of dipole and spin transfer in chiral peptide monolayers Eckshtain-Levi, Meital Capua, Eyal Refaely-Abramson, Sivan Sarkar, Soumyajit Gavrilov, Yulian Mathew, Shinto P. Paltiel, Yossi Levy, Yaakov Kronik, Leeor Naaman, Ron Nat Commun Article Chirality-induced spin selectivity is a recently-discovered effect, which results in spin selectivity for electrons transmitted through chiral peptide monolayers. Here, we use this spin selectivity to probe the organization of self-assembled α-helix peptide monolayers and examine the relation between structural and spin transfer phenomena. We show that the α-helix structure of oligopeptides based on alanine and aminoisobutyric acid is transformed to a more linear one upon cooling. This process is similar to the known cold denaturation in peptides, but here the self-assembled monolayer plays the role of the solvent. The structural change results in a flip in the direction of the electrical dipole moment of the adsorbed molecules. The dipole flip is accompanied by a concomitant change in the spin that is preferred in electron transfer through the molecules, observed via a new solid-state hybrid organic–inorganic device that is based on the Hall effect, but operates with no external magnetic field or magnetic material. Nature Publishing Group 2016-02-26 /pmc/articles/PMC4773432/ /pubmed/26916536 http://dx.doi.org/10.1038/ncomms10744 Text en Copyright © 2016, Nature Publishing Group, a division of Macmillan Publishers Limited. All Rights Reserved. http://creativecommons.org/licenses/by/4.0/ This work is licensed under a Creative Commons Attribution 4.0 International License. The images or other third party material in this article are included in the article's Creative Commons license, unless indicated otherwise in the credit line; if the material is not included under the Creative Commons license, users will need to obtain permission from the license holder to reproduce the material. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/ |
spellingShingle | Article Eckshtain-Levi, Meital Capua, Eyal Refaely-Abramson, Sivan Sarkar, Soumyajit Gavrilov, Yulian Mathew, Shinto P. Paltiel, Yossi Levy, Yaakov Kronik, Leeor Naaman, Ron Cold denaturation induces inversion of dipole and spin transfer in chiral peptide monolayers |
title | Cold denaturation induces inversion of dipole and spin transfer in chiral peptide monolayers |
title_full | Cold denaturation induces inversion of dipole and spin transfer in chiral peptide monolayers |
title_fullStr | Cold denaturation induces inversion of dipole and spin transfer in chiral peptide monolayers |
title_full_unstemmed | Cold denaturation induces inversion of dipole and spin transfer in chiral peptide monolayers |
title_short | Cold denaturation induces inversion of dipole and spin transfer in chiral peptide monolayers |
title_sort | cold denaturation induces inversion of dipole and spin transfer in chiral peptide monolayers |
topic | Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4773432/ https://www.ncbi.nlm.nih.gov/pubmed/26916536 http://dx.doi.org/10.1038/ncomms10744 |
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