The electron donor-acceptor tetrathiafulvalene-polychlorotriphenylmethyl (PTM) radical dyad, which shows a strong interplay between intra- and intermolecular charge transfer processes in solution, has been deposited by drop-casting on highly oriented pyrolytic graphite substrates, and its self-assembled structure has been investigated. Conducting atomic force microscopy revealed that the presence of a PTM radical in the molecules enhances the electrical conduction by almost two orders of magnitude and that this enhancement occurs in spite of the poor molecular orientation control achieved with drop-casting. Moreover, the study also reveals that the presence of a tetrathiafulvalene subunit in the deposited molecules can result in slightly asymmetric I-V curves.
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Two-dimensional self-assembly and electrical properties of the donor-acceptor tetrathiafulvalene-polychlorotriphenylmethyl radical on graphite substrates
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14 April 2019
Research Article|
April 02 2019
Two-dimensional self-assembly and electrical properties of the donor-acceptor tetrathiafulvalene-polychlorotriphenylmethyl radical on graphite substrates
Special Collection:
Molecular Spintronics
Judith Guasch
;
Judith Guasch
a)
1
Institut de Ciència de Materials de Barcelona (CSIC)/CIBER-BBN
, Campus UAB, Cerdanyola del Vallès, 08193 Barcelona, Spain
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Núria Crivillers
;
Núria Crivillers
1
Institut de Ciència de Materials de Barcelona (CSIC)/CIBER-BBN
, Campus UAB, Cerdanyola del Vallès, 08193 Barcelona, Spain
2
Université de Strasbourg, CNRS, ISIS UMR 7006
, 8 allée Gaspard Monge, 67000 Strasbourg, France
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Manuel Souto
;
Manuel Souto
b)
1
Institut de Ciència de Materials de Barcelona (CSIC)/CIBER-BBN
, Campus UAB, Cerdanyola del Vallès, 08193 Barcelona, Spain
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Imma Ratera
;
Imma Ratera
1
Institut de Ciència de Materials de Barcelona (CSIC)/CIBER-BBN
, Campus UAB, Cerdanyola del Vallès, 08193 Barcelona, Spain
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Concepció Rovira
;
Concepció Rovira
1
Institut de Ciència de Materials de Barcelona (CSIC)/CIBER-BBN
, Campus UAB, Cerdanyola del Vallès, 08193 Barcelona, Spain
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Paolo Samorì
;
Paolo Samorì
2
Université de Strasbourg, CNRS, ISIS UMR 7006
, 8 allée Gaspard Monge, 67000 Strasbourg, France
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Jaume Veciana
Jaume Veciana
a)
1
Institut de Ciència de Materials de Barcelona (CSIC)/CIBER-BBN
, Campus UAB, Cerdanyola del Vallès, 08193 Barcelona, Spain
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b)
Present address: Instituto de Ciencia Molecular (ICMol), Universidad de Valencia, Catedrático José Beltrán 2, 46980 Paterna, Spain.
J. Appl. Phys. 125, 142909 (2019)
Article history
Received:
October 10 2018
Accepted:
November 29 2018
Citation
Judith Guasch, Núria Crivillers, Manuel Souto, Imma Ratera, Concepció Rovira, Paolo Samorì, Jaume Veciana; Two-dimensional self-assembly and electrical properties of the donor-acceptor tetrathiafulvalene-polychlorotriphenylmethyl radical on graphite substrates. J. Appl. Phys. 14 April 2019; 125 (14): 142909. https://doi.org/10.1063/1.5065448
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