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Unravelling the conductance path through single-porphyrin junctions

El Abbassi, M.; Zwick, P.; Rates, A.; Stefani, D.; Prescimone, A.; Mayor, Marcel 1; Van Der Zant, H. S. J.; Dulić, D.
1 Institut für Nanotechnologie (INT), Karlsruher Institut für Technologie (KIT)

Abstract (englisch):

Porphyrin derivatives are key components in natural machinery enabling us to store sunlight as chemical energy. In spite of their prominent role in cascades separating electrical charges and their potential as sensitizers in molecular devices, reports concerning their electronic transport characteristics are inconsistent. Here we report a systematic investigation of electronic transport paths through single porphyrin junctions. The transport through seven structurally related porphyrin derivatives was repeatedly measured in an automatized mechanically controlled break-junction set-up and the recorded data were analyzed by an unsupervised clustering algorithm. The correlation between the appearances of similar clusters in particular sub-sets of the porphyrins with a common structural motif allowed us to assign the corresponding current path. The small series of model porphyrins allowed us to identify and distinguish three different electronic paths covering more than four orders of magnitude in conductance.

Verlagsausgabe §
DOI: 10.5445/IR/1000098776
Veröffentlicht am 09.10.2019
DOI: 10.1039/c9sc02497b
Zitationen: 26
Web of Science
Zitationen: 28
Zitationen: 30
Cover der Publikation
Zugehörige Institution(en) am KIT Institut für Nanotechnologie (INT)
Publikationstyp Zeitschriftenaufsatz
Publikationsjahr 2019
Sprache Englisch
Identifikator ISSN: 2041-6520, 2041-6539
KITopen-ID: 1000098776
HGF-Programm 43.21.04 (POF III, LK 01) Molecular Engineering
Erschienen in Chemical science
Verlag Royal Society of Chemistry (RSC)
Band 10
Heft 36
Seiten 8299-8305
Vorab online veröffentlicht am 31.07.2019
Nachgewiesen in Dimensions
Web of Science
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