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2022-03-31Zeitschriftenartikel DOI: 10.18452/28268
Resonant Electron Tunneling Induces Isomerization of π-Expanded Oligothiophene Macrocycles in a 2D Crystal
dc.contributor.authorCojal Gonzalez, José D.
dc.contributor.authorIyoda, Masahiko
dc.contributor.authorRabe, Jürgen P.
dc.date.accessioned2024-02-13T08:48:09Z
dc.date.available2024-02-13T08:48:09Z
dc.date.issued2022-03-31none
dc.identifier.urihttp://edoc.hu-berlin.de/18452/28913
dc.description.abstractMacrocyclic oligothiophenes and their π-expanded derivatives constitute versatile building blocks for the design of (supra)molecularly engineered active interfaces, owing to their structural, chemical, and optoelectronic properties. Here, it is demonstrated how resonant tunneling effect induces single molecular isomerization in a 2D crystal, self-assembled at solid–liquid interfaces under ambient conditions. Monolayers of a series of four π-expanded oligothiophene macrocycles are investigated by means of scanning tunneling microscopy and scanning tunneling spectroscopy (STS) at the interface between their octanoic acid solutions and the basal plane of highly oriented pyrolytic graphite. Current–voltage characteristics confirm the donor-type character of the macrocycles, with the highest occupied molecular orbital and the lowest unoccupied molecular orbital (LUMO) positions consistent with time-dependent density functional theory calculations. Cyclic STS measurements show the redox isomerization from Z,Z-8T6A to its isomer E,E-8T6A occurring in the 2D crystal, due to the formation of a negatively charged species when the tunneling current is in resonance with the LUMO of the macrocycle.eng
dc.language.isoengnone
dc.publisherHumboldt-Universität zu Berlin
dc.rights(CC BY 4.0) Attribution 4.0 Internationalger
dc.rights.urihttps://creativecommons.org/licenses/by/4.0/
dc.subjectmolecular electronicseng
dc.subjectmolecular switcheng
dc.subjectredox isomerizationeng
dc.subjectscanning tunneling microscopy and spectroscopyeng
dc.subjectsolid–liquid interfaceseng
dc.subject.ddc530 Physiknone
dc.titleResonant Electron Tunneling Induces Isomerization of π-Expanded Oligothiophene Macrocycles in a 2D Crystalnone
dc.typearticle
dc.identifier.urnurn:nbn:de:kobv:11-110-18452/28913-2
dc.identifier.doihttp://dx.doi.org/10.18452/28268
dc.type.versionpublishedVersionnone
local.edoc.pages9none
local.edoc.type-nameZeitschriftenartikel
local.edoc.container-typeperiodical
local.edoc.container-type-nameZeitschrift
dc.description.versionPeer Reviewednone
dc.identifier.eissn2198-3844
dcterms.bibliographicCitation.doi10.1002/advs.202200557
dcterms.bibliographicCitation.journaltitleAdvanced sciencenone
dcterms.bibliographicCitation.volume9none
dcterms.bibliographicCitation.issue19none
dcterms.bibliographicCitation.articlenumber2200557none
dcterms.bibliographicCitation.originalpublishernameWiley-VCHnone
dcterms.bibliographicCitation.originalpublisherplaceWeinheimnone
bua.departmentMathematisch-Naturwissenschaftliche Fakultätnone

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