Single-Molecule Break Junctions Based on a Perylene-Diimide Cyano-Functionalized (PDI8-CN2) Derivative.
Nanoscale Res Lett
; 10(1): 1011, 2015 Dec.
Article
em En
| MEDLINE
| ID: mdl-26216013
ABSTRACT
In this letter, we report the single-molecule conductance properties of a cyano-functionalized perylene-diimide derivative (PDI8-CN2) 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) G0, is related to a charge transport path directly linking the two cyano groups.
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01-internacional
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MEDLINE
Idioma:
En
Ano de publicação:
2015
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Article