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Single-molecule conductance of a chemically modified, π-extended tetrathiafulvalene and its charge-transfer complex with F4TCNQ

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García, Raúl y Herranz, M.Angeles y Leary, Edmund y González, M.Teresa y Rubio Bollinger, Gabino y Bürkle, Marius y Zotti, Linda A. y Asai, Yoshihiro y Pauly, Fabian y Cuevas, Juan Carlos y Agrait, Nicolás y Martín, Nazario (2015) Single-molecule conductance of a chemically modified, π-extended tetrathiafulvalene and its charge-transfer complex with F4TCNQ. Belstein journal of organic chemistry, 11 . pp. 1068-1078. ISSN 1860-5397

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URL Oficial: https://www.beilstein-journals.org/bjoc/single/articleFullText.htm?publicId=1860-5397-11-120



Resumen

We describe the synthesis and single-molecule electrical transport properties of a molecular wire containing a π-extended tetrathiafulvalene (exTTF) group and its charge-transfer complex with F4TCNQ. We form single-molecule junctions using the in situ break junction technique using a homebuilt scanning tunneling microscope with a range of conductance between 10 G0 down to 10−7 G0 .Within this range we do not observe a clear conductance signature of the neutral parent molecule, suggesting either that its conductance is too low or that it does not form a stable junction. Conversely, we do find a clear conductance signature in the experiments carried out on the charge-transfer complex. Due to the fact we expected this species to have a higher conductance than the neutral molecule, we believe this supports the idea that the conductance of the neutral molecule is very low, below our measurement sensitivity. This idea is further supported by theoretical calculations. To the best of our knowledge, these are the first reported singlemolecule conductance measurements on a molecular charge-transfer species


Tipo de documento:Artículo
Palabras clave:break junction measurements; charge-transfer complex; DFT-based transport; molecular electronics; tetrathiafulvalene
Materias:Ciencias > Química > Química orgánica
Código ID:35960
Depositado:25 Feb 2016 16:25
Última Modificación:10 Aug 2016 09:03

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