Electron transport through self-assembled monolayers of tripeptides
| Autor: | Mervinetsky, Evgeniy, Alshanski, Israel, Lenfant, Stéphane, Guerin, David, Sandonas, L. Medrano, Dianat, Arezoo, Gutierrez, Rafael, Cuniberti, Gianaurelio, Hurevich, M., YITZCHAIK, S., Vuillaume, Dominique, Medrano Sandonas, Leonardo, Hurevich, Israel, Yitzchaik, Israel |
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| Přispěvatelé: | Institut d’Électronique, de Microélectronique et de Nanotechnologie - UMR 8520 (IEMN), Centrale Lille-Institut supérieur de l'électronique et du numérique (ISEN)-Université de Valenciennes et du Hainaut-Cambrésis (UVHC)-Université de Lille-Centre National de la Recherche Scientifique (CNRS)-Université Polytechnique Hauts-de-France (UPHF), Nanostructures, nanoComponents & Molecules - IEMN (NCM-IEMN), Centrale Lille-Institut supérieur de l'électronique et du numérique (ISEN)-Université de Valenciennes et du Hainaut-Cambrésis (UVHC)-Université de Lille-Centre National de la Recherche Scientifique (CNRS)-Université Polytechnique Hauts-de-France (UPHF)-Centrale Lille-Institut supérieur de l'électronique et du numérique (ISEN)-Université de Valenciennes et du Hainaut-Cambrésis (UVHC)-Université de Lille-Centre National de la Recherche Scientifique (CNRS)-Université Polytechnique Hauts-de-France (UPHF), CTP, Centre Technique du Papier (CTP), Leibniz Institute for Solid State and Materials Research (IFW Dresden), Leibniz Association, Nanostructures, nanoComponents & Molecules - IEMN (NCM - IEMN) |
| Rok vydání: | 2019 |
| Předmět: |
animal structures
Materials science FOS: Physical sciences 02 engineering and technology Tripeptide Applied Physics (physics.app-ph) 010402 general chemistry 01 natural sciences Metal Condensed Matter::Materials Science Monolayer Mesoscale and Nanoscale Physics (cond-mat.mes-hall) Work function Physical and Theoretical Chemistry [PHYS.COND.CM-MSQHE]Physics [physics]/Condensed Matter [cond-mat]/Mesoscopic Systems and Quantum Hall Effect [cond-mat.mes-hall] [PHYS]Physics [physics] integumentary system Condensed Matter - Mesoscale and Nanoscale Physics Self-assembled monolayer Physics - Applied Physics 021001 nanoscience & nanotechnology Electron transport chain 0104 chemical sciences Surfaces Coatings and Films Electronic Optical and Magnetic Materials Crystallography General Energy visual_art embryonic structures visual_art.visual_art_medium 0210 nano-technology |
| Zdroj: | Journal of Physical Chemistry C Journal of Physical Chemistry C, American Chemical Society, 2019, 123 (14), pp.9600-9608. ⟨10.1021/acs.jpcc.9b01082⟩ Journal of Physical Chemistry C, 2019, 123 (14), pp.9600-9608. ⟨10.1021/acs.jpcc.9b01082⟩ |
| ISSN: | 1932-7447 1932-7455 |
| DOI: | 10.48550/arxiv.1904.04887 |
| Popis: | We report how the electron transport through a solid-state metal/Gly-Gly-His tripeptide (GGH) monolayer/metal junction and the metal/GGH work function are modified by the GGH complexation with Cu2+ ions. Conducting AFM is used to measure the current-voltage histograms. The work function is characterized by combining macroscopic Kelvin probe and Kelvin probe force microscopy at the nanoscale. We observe that the Cu2+ ions complexation with the GGH monolayer is highly dependent on the molecular surface density and results in opposite trends. In the case of a high density monolayer the conformational changes are hindered by the proximity of the neighboring peptides, hence forming an insulating layer in response to copper-complexation. Whereas the slightly lower density monolayers allow for the conformational change to a looped peptide wrapping the Cu-ion, which results in a more conductive monolayer. Copper-ion complexation to the high- and low-density monolayers systematically induces an increase of the work functions. Copper-ion complexation to the low-density monolayer induces an increase of electron transport efficiency, while the copper-ion complexation to the high-density monolayer results in a slight decrease of electron transport. Both of the observed trends are in agreement with first-principle calculations. Complexed copper to low density GGH-monolayer induces a new gap state slightly above the Au Fermi energy that is absent in the high density monolayer. Comment: Full paper with supporting information |
| Databáze: | OpenAIRE |
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