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Herrera, S.; Tasca, F.; Williams, F.J.; Calvo, E.J.; Carro, P.; Salvarezza, R.C. "Surface Structure of 4-Mercaptopyridine on Au(111): A New Dense Phase" (2017) Langmuir. 33(38):9565-9572
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Abstract:

4-Mercaptopyridine (4MPy) self-assembled on Au(111) has been studied by in situ electrochemical scanning tunneling microscopy (EC-STM) in HClO4, cyclic voltammetry, X-ray photoelectron spectroscopy (XPS) and density functional theory (DFT). Samples prepared by varying the immersion time at constant concentration named short time (30 s) and long time (3 min) adsorption have been studied. Cyclic voltammetry and XPS showed that the chemistry of the adsorbed molecules does not depend on the adsorption time resulting in a well established chemisorbed thiol self-assembled monolayer on Au(111). EC-STM study of the short time adsorption sample revealed a new self-assembled structure after a cathodic desorption/readsorption sweep, which remains stable only if the potential is kept negative to the Au(111) zero charge potential (EPZC). DFT calculations have shown a correlation between the observed structure and a dense weakly adsorbed phase with a surface coverage of θ = 0.4 and a (5 × √3) lattice configuration. At potentials positive to the EPZC, the weakly adsorbed state becomes unstable, and a different structure is formed due to the chemisorption driven by the electrostatic interaction. Long time adsorption experiments, on the other hand, have shown the typical (5 × √3) structure with θ = 0.2 surface coverage (chemisorbed phase) and are stable over the whole potential range. The difference observed in long time and short time immersion can be explained by the optimization of molecular interactions during the self-assembly process. © 2017 American Chemical Society.

Registro:

Documento: Artículo
Título:Surface Structure of 4-Mercaptopyridine on Au(111): A New Dense Phase
Autor:Herrera, S.; Tasca, F.; Williams, F.J.; Calvo, E.J.; Carro, P.; Salvarezza, R.C.
Filiación:Departamento de Química Inorgánica, Analítica y Química Física, INQUIMAE-CONICET, Facultad Ciencias Exactas y Naturales, Universidad de Buenos Aires, Ciudad Universitaria, Pabellón 2, Buenos Aires, C1428EHA, Argentina
Área de Química Física, Departamento de Química, Facultad de Ciencias, Universidad de la Laguna, Instituto de Materiales y Nanotecnología, Avenida Francisco Sánchez, s/n, La Laguna, Tenerife, 38200, Spain
INIFTA Instituto de Investigaciones Fisicoquímicas Teóricas y Aplicadas (INIFTA), Facultad de Ciencias Exactas, Universidad Nacional de la Plata - CONICET- Sucursal, 4 Casilla de Correo 16, La Plata, 1900, Argentina
Departamento de Química de Los Materiales, Facultad de Química y Biologiá, Universidad de Santiago de Chile, Av. Libertador Bernardo ÓHiggins 3363, Santiago, Chile
Palabras clave:Adsorption; Chemisorption; Cyclic voltammetry; Density functional theory; Scanning tunneling microscopy; Self assembled monolayers; Self assembly; 4-Mercaptopyridine (4MPy); Adsorption experiment; Electrochemical scanning tunneling microscopy; Lattice configuration; Self assembled structures; Self assembly process; Thiol self-assembled monolayers; Zero-charge potential; X ray photoelectron spectroscopy
Año:2017
Volumen:33
Número:38
Página de inicio:9565
Página de fin:9572
DOI: http://dx.doi.org/10.1021/acs.langmuir.7b01627
Título revista:Langmuir
Título revista abreviado:Langmuir
ISSN:07437463
CODEN:LANGD
Registro:https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_07437463_v33_n38_p9565_Herrera

Referencias:

  • Love, J.C., Estroff, L.A., Kriebel, J.K., Nuzzo, R.G., Whitesides, G.M., (2005) Chem. Rev., 105, p. 1103
  • Vericat, C., Vela, M.E., Benitez, G., Carro, P., Salvarezza, R.C., (2010) Chem. Soc. Rev., 39, p. 1805
  • Häkkinen, H., (2012) Nat. Chem., 4, p. 443
  • Jin, Q., Rodriguez, J.A., Li, C.Z., Darici, Y., Tao, N.J., (1999) Surf. Sci., 425, p. 101
  • Poirier, G.E., Pylant, E.D., (1996) Science, 272, p. 1145
  • Pensa, E., Rubert, A.A., Benitez, G., Carro, P., Orive, A.G., Creus, A.H., Salvarezza, R.C., Vericat, C., (2012) J. Phys. Chem. C, 116, p. 25765
  • Ramírez, E.A., Cortés, E., Rubert, A.A., Carro, P., Benítez, G., Vela, M.E., Salvarezza, R.C., (2012) Langmuir, 28, p. 6839
  • Cai, W.B., Wan, L.J., Noda, H., Hibino, Y., Ataka, K., Osawa, M., (1998) Langmuir, 14, p. 6992
  • Wan, L.J., Terashima, M., Noda, H., Osawa, M., (2000) J. Phys. Chem. B, 104, p. 3563
  • Wan, L.-J., Hara, Y., Noda, H., Osawa, M., (1998) J. Phys. Chem. B, 102, p. 5943
  • Baunach, T., Ivanova, V., Scherson, D.A., Kolb, D.M., (2004) Langmuir, 20, p. 2797
  • Zhou, W., Baunach, T., Ivanova, V., Kolb, D.M., (2004) Langmuir, 20, p. 4590
  • Kǔcera, J., Gross, A., (2008) Langmuir, 24, p. 13985
  • Kresse, G., Hafner, J., (1993) Phys. Rev. B: Condens. Matter Mater. Phys., 48, p. 13115
  • Kresse, G., Furthmüller, J., (1996) Comput. Mater. Sci., 6, p. 15
  • Dion, M., Rydberg, H., Schröder, E., Langreth, D.C., Lundqvist, B.I., (2004) Phys. Rev. Lett., 92, p. 246401
  • Klimeš, J., Bowler, D.R., Michaelides, A., (2010) J. Phys.: Condens. Matter, 22, p. 022201
  • Blöchl, P.E., (1994) Phys. Rev. B: Condens. Matter Mater. Phys., 50, p. 17953
  • Monkhorst, H.J., Pack, J.D., (1976) Phys. Rev. B, 13, p. 5188
  • Blöchl, P.E., Margl, P., Schwarz, K., (1996) Chemical Application of Density-Functional Theory, 629, p. 54. , Brian, B. Laird, R. B. R. Ziegler, T. American Chemical Society: Washington, DC
  • Kresse, G., Joubert, D., (1999) Phys. Rev. B: Condens. Matter Mater. Phys., 59, p. 1758
  • Torres, D., Carro, P., Salvarezza, R.C., Illas, F., (2006) Phys. Rev. Lett., 97, p. 226103
  • Reuter, K., Scheffler, M., (2001) Phys. Rev. B: Condens. Matter Mater. Phys., 65, p. 035406
  • Kolb, D.M., Schneider, J., (1986) Electrochim. Acta, 31, p. 929
  • Cunha, F., Tao, N.J., (1995) Phys. Rev. Lett., 75, p. 2376
  • Sawaguchi, T., Mizutani, F., Taniguchi, I., (1998) Langmuir, 14, p. 3565
  • Sawaguchi, T., Mizutani, F., Yoshimoto, S., Taniguchi, I., (2000) Electrochim. Acta, 45, p. 2861
  • Vericat, C., Vela, M.E., Corthey, G., Pensa, E., Cortés, E., Fonticelli, M.H., Ibañez, F., Salvarezza, R.C., (2014) RSC Adv., 4, p. 27730
  • Boland, T., Ratner, B.D., (1994) Langmuir, 10, p. 3845
  • Ptasińska, S., Stypczyńska, A., Nixon, T., Mason, N.J., Klyachko, D.V., Sanche, L., (2008) J. Chem. Phys., 129, p. 065102
  • Lusteinberg, P.G., Vericat, C., Benitez, G.A., Vela, M.E., Tognalli, N., Fainstein, A., Martiarena, M.L., Salvarezza, R.C., (2008) J. Phys. Chem. C, 112, p. 11394
  • Wan, L.J., Noda, H., Hara, Y., Osawa, M., (2000) J. Electroanal. Chem., 489, p. 68
  • Kautz, N.A., Kandel, S.A., (2008) J. Am. Chem. Soc., 130, p. 6908

Citas:

---------- APA ----------
Herrera, S., Tasca, F., Williams, F.J., Calvo, E.J., Carro, P. & Salvarezza, R.C. (2017) . Surface Structure of 4-Mercaptopyridine on Au(111): A New Dense Phase. Langmuir, 33(38), 9565-9572.
http://dx.doi.org/10.1021/acs.langmuir.7b01627
---------- CHICAGO ----------
Herrera, S., Tasca, F., Williams, F.J., Calvo, E.J., Carro, P., Salvarezza, R.C. "Surface Structure of 4-Mercaptopyridine on Au(111): A New Dense Phase" . Langmuir 33, no. 38 (2017) : 9565-9572.
http://dx.doi.org/10.1021/acs.langmuir.7b01627
---------- MLA ----------
Herrera, S., Tasca, F., Williams, F.J., Calvo, E.J., Carro, P., Salvarezza, R.C. "Surface Structure of 4-Mercaptopyridine on Au(111): A New Dense Phase" . Langmuir, vol. 33, no. 38, 2017, pp. 9565-9572.
http://dx.doi.org/10.1021/acs.langmuir.7b01627
---------- VANCOUVER ----------
Herrera, S., Tasca, F., Williams, F.J., Calvo, E.J., Carro, P., Salvarezza, R.C. Surface Structure of 4-Mercaptopyridine on Au(111): A New Dense Phase. Langmuir. 2017;33(38):9565-9572.
http://dx.doi.org/10.1021/acs.langmuir.7b01627