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Electron Transport and a Rectifying Effect of Oligourea Foldamer Films Entrapped within Nanoscale Junctions

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dc.abstract.enα-Helicomimetic oligoureas are a class of compounds with a broad spectrum of applications, yet their use in materials science remains still unexplored. In this work, we have synthesized three oligomers composed of 8–12 residues and studied their electron transport characteristic. We have found that the conductance of oligoureas depends on the length of the molecule. The distance dependence yields a low value of the decay constant, which indicates that the dominant mechanism is hopping. Moreover, we describe here an entirely new property of oligoureas, that is, directional dependence of electron transport. The latter is manifested on current–voltage characteristic as current rectification. The highest rectification ratio observed was ≈12, which is around 3 times greater than that observed for helical peptides of similar length. This effect demonstrates that carefully designed oligomers with a well-defined secondary structure (e.g., oligourea foldamers) may be considered as potential candidates for use in nanoelectronics.
dc.affiliationUniwersytet Warszawski
dc.contributor.authorPuszko, Anna
dc.contributor.authorPułka-Ziach, Karolina
dc.contributor.authorJuhaniewicz-Dębińska, Joanna
dc.contributor.authorSęk, Sławomir
dc.date.accessioned2024-01-24T22:46:04Z
dc.date.available2024-01-24T22:46:04Z
dc.date.issued2019
dc.description.financeNie dotyczy
dc.description.number2
dc.description.volume132
dc.identifier.doi10.1021/ACS.JPCC.8B11046
dc.identifier.issn1932-7447
dc.identifier.urihttps://repozytorium.uw.edu.pl//handle/item/106017
dc.languageeng
dc.pbn.affiliationchemical sciences
dc.relation.ispartofJournal of Physical Chemistry C
dc.relation.pages1136–1141
dc.rightsClosedAccess
dc.sciencecloudnosend
dc.titleElectron Transport and a Rectifying Effect of Oligourea Foldamer Films Entrapped within Nanoscale Junctions
dc.typeJournalArticle
dspace.entity.typePublication