TY - JOUR
T1 - Single-Molecule Break Junctions Based on a Perylene-Diimide Cyano-Functionalized (PDI8-CN2) Derivative
AU - Frisenda, Riccardo
AU - Parlato, Loredana
AU - Barra, Mario
AU - van der Zant, Herre S J
AU - Cassinese, Antonio
PY - 2015
Y1 - 2015
N2 - 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.
AB - 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.
KW - Break junctions
KW - Conductance
KW - Density functional theory
KW - Perylene-diimide molecules
KW - Single molecule
UR - http://www.scopus.com/inward/record.url?scp=84938411625&partnerID=8YFLogxK
U2 - 10.1186/s11671-015-1011-3
DO - 10.1186/s11671-015-1011-3
M3 - Article
SN - 1931-7573
VL - 10
JO - Nanoscale Research Letters
JF - Nanoscale Research Letters
IS - 1
M1 - 305
ER -