Single-Molecule Break Junctions Based on a Perylene-Diimide Cyano-Functionalized (PDI8-CN2) Derivative

Single-Molecule Break Junctions Based on a Perylene-Diimide Cyano-Functionalized (PDI8-CN2) Derivative

Frisenda, R.
Parlato, L.
Barra, M.
Van der Zant, H.S.J.
Cassinese, A.

Applied Sciences

QN/Quantum Nanoscience

2015-07-28

In this letter, we report the single-molecule conductance properties of a cyano-functionalized perylene-diimide derivative (PDI8-CN 2 ) investigated with gold nano-electrodes. This molecule is of large interest for the fabrication of high-performance and air-stable n-type organic field-effect transistors. Low-bias experiments performed on mechanically controllable break junctions reveal the presence of two different values of the single-molecule conductance, which differ by about two orders of magnitudes. Up to date, this feature was never observed for other perylene-diimide compounds having alternative chemical moieties attached to the basic aromatic core. Theoretical calculations suggest that the highest single-molecule conductance value here observed, comprised between 10 ?2 and 10 ?3 G 0 , is related to a charge transport path directly linking the two cyano groups.

perylene-diimide molecules
single molecule
break junctions
conductance
density functional theory
OA-Fund TU Delft

http://resolver.tudelft.nl/uuid:8d1ea6b9-d250-4b21-a6fa-589d2844305a

BioMed Central

1931-7573

https://doi.org/10.1186/s11671-015-1011-3

Nanoscale Research Letters, 10, 2015

Institutional Repository

journal article

© 2015 The Author(s)
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