High conductance values in pi-folded molecular junctions
authors Carini, M; Ruiz, MP; Usabiaga, I; Fernandez, JA; Cocinero, EJ; Melle-Franco, M; Diez-Perez, I; Mateo-Alonso, A
nationality International
journal NATURE COMMUNICATIONS
keywords AROMATIC OLIGOAMIDE FOLDAMERS; CHARGE-TRANSFER; THROUGH-SPACE; PEPTIDE FOLDAMERS; ENERGY-TRANSFER; SINGLE; DNA; TRANSPORT; DONOR; ASSEMBLIES
abstract Folding processes play a crucial role in the development of function in biomacromolecules. Recreating this feature on synthetic systems would not only allow understanding and reproducing biological functions but also developing new functions. This has inspired the development of conformationally ordered synthetic oligomers known as foldamers. Herein, a new family of foldamers, consisting of an increasing number of anthracene units that adopt a folded sigmoidal conformation by a combination of intramolecular hydrogen bonds and aromatic interactions, is reported. Such folding process opens up an efficient through-space charge transport channel across the interacting anthracene moieties. In fact, single-molecule conductance measurements carried out on this series of foldamers, using the scanning tunnelling microscopy-based break-junction technique, reveal exceptionally high conductance values in the order of 10(-1) G(0) and a low length decay constant of 0.02 angstrom(-1) that exceed the values observed in molecular junctions that make use of through-space charge transport pathways.
publisher NATURE PUBLISHING GROUP
issn 2041-1723
year published 2017
volume 8
digital object identifier (doi) 10.1038/ncomms15195
web of science category Multidisciplinary Sciences
subject category Science & Technology - Other Topics
unique article identifier WOS:000401508000001
  ciceco authors
  impact metrics
times cited (wos core): 0
journal impact factor (jcr 2016): 12.124
5 year journal impact factor (jcr 2016): 13.092
category normalized journal impact factor percentile (jcr 2016): 96.094
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