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Single‐Molecule Conductance of 1,4‐Azaborine Derivatives as Models of BN‐doped PAHs
Author(s) -
PalominoRuiz Lucía,
RodríguezGonzález Sandra,
Fallaque Joel G.,
Márquez Irene R.,
Agraït Nicolás,
Díaz Cristina,
Leary Edmund,
Cuerva Juan M.,
Campaña Araceli G.,
Martín Fernando,
Millán Alba,
González M. Teresa
Publication year - 2021
Publication title -
angewandte chemie international edition
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 5.831
H-Index - 550
eISSN - 1521-3773
pISSN - 1433-7851
DOI - 10.1002/anie.202014194
Subject(s) - heteroatom , acene , conductance , anthracene , pentacene , molecule , doping , tetracene , materials science , electron transport chain , molecular electronics , chemical physics , quantum tunnelling , nanotechnology , chemistry , computational chemistry , photochemistry , condensed matter physics , optoelectronics , organic chemistry , physics , layer (electronics) , biochemistry , thin film transistor , ring (chemistry)
The single‐molecule conductance of a series of BN‐acene‐like derivatives has been measured by using scanning tunneling break‐junction techniques. A strategic design of the target molecules has allowed us to include azaborine units in positions that unambiguously ensure electron transport through both heteroatoms, which is relevant for the development of customized BN‐doped nanographenes. We show that the conductance of the anthracene azaborine derivative is comparable to that of the pristine all‐carbon anthracene compound. Notably, this heteroatom substitution has also allowed us to perform similar measurements on the corresponding pentacene‐like compound, which is found to have a similar conductance, thus evidencing that B–N doping could also be used to stabilize and characterize larger acenes for molecular electronics applications. Our conclusions are supported by state‐of‐the‐art transport calculations.