dc.contributor.author
Reecht, Gaël
dc.contributor.author
Lotze, Christian
dc.contributor.author
Sysoiev, Dmytro
dc.contributor.author
Huhn, Thomas
dc.contributor.author
Franke, Katharina J.
dc.date.accessioned
2020-04-09T12:06:13Z
dc.date.available
2020-04-09T12:06:13Z
dc.identifier.uri
https://refubium.fu-berlin.de/handle/fub188/27095
dc.identifier.uri
http://dx.doi.org/10.17169/refubium-26856
dc.description.abstract
Using scanning tunneling microscopy and spectroscopy we investigate the adsorption properties and ring-closing reaction of a diarylethene derivative (C5F-4Py) on a Ag(1 1 1) surface. We identify an electron-induced reaction mechanism, with a quantum yield varying from 10−14–10−9 per electron upon variation of the bias voltage from 1–2 V. We ascribe the drastic increase in switching efficiency to a resonant enhancement upon tunneling through molecular orbitals. Additionally, we resolve the ring-closing reaction even in the absence of a current passing through the molecule. In this case the electric-field can modify the reaction barrier, leading to a finite switching probability at 4.8 K. A detailed analysis of the switching events shows that a simple plate-capacitor model for the tip-surface junction is insufficient to explain the distance dependence of the switching voltage. Instead, describing the tip as a sphere is in agreement with the findings. We resolve small differences in the adsorption configuration of the closed isomer, when comparing the electron- and field-induced switching product.
en
dc.format.extent
6 Seiten
dc.rights.uri
http://www.fu-berlin.de/sites/refubium/rechtliches/Nutzungsbedingungen
dc.subject
ring-closing reactions
en
dc.subject
electric-field
en
dc.subject
electron-field
en
dc.subject.ddc
500 Naturwissenschaften und Mathematik::530 Physik::530 Physik
dc.title
Disentangling electron- and electric-field-induced ring-closing reactions in a diarylethene derivative on Ag(1 1 1)
dc.type
Wissenschaftlicher Artikel
dcterms.bibliographicCitation.articlenumber
294001
dcterms.bibliographicCitation.doi
10.1088/1361-648X/aa75c1
dcterms.bibliographicCitation.journaltitle
Journal of physics
dcterms.bibliographicCitation.number
29
dcterms.bibliographicCitation.volume
29
dcterms.bibliographicCitation.url
https://doi.org/10.1088/1361-648X/aa75c1
refubium.affiliation
Physik
refubium.resourceType.isindependentpub
no
dcterms.accessRights.openaire
open access
dcterms.isPartOf.issn
0953-8984
dcterms.isPartOf.eissn
1361-648X