Unravelling the conductance path through single-porphyrin junctions.
Journal
Chemical science
ISSN: 2041-6520
Titre abrégé: Chem Sci
Pays: England
ID NLM: 101545951
Informations de publication
Date de publication:
28 Sep 2019
28 Sep 2019
Historique:
received:
22
05
2019
accepted:
30
07
2019
entrez:
6
12
2019
pubmed:
6
12
2019
medline:
6
12
2019
Statut:
epublish
Résumé
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.
Identifiants
pubmed: 31803408
doi: 10.1039/c9sc02497b
pii: c9sc02497b
pmc: PMC6853084
doi:
Types de publication
Journal Article
Langues
eng
Pagination
8299-8305Informations de copyright
This journal is © The Royal Society of Chemistry 2019.
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