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Abstract:

A detailed polarization modulation infrared reflection absorption spectroscopy, scanning tunneling microscopy, and electrochemical study on methylene blue (MB) incorporation into alkanethiolate self-assembled monolayers (SAMs) on Au(111) is reported. Results show that the amount of MB incorporated in the SAMs reaches a maximum for intermediate hydrocarbon chain lengths (C10-C12). Well-ordered SAMs of long alkanethiols (C > C12) hinder the incorporation of the MB molecules into the SAM. On the other hand, less ordered SAMs of short alkanethiols (C ≤ C6) are not efficient to retain the MB incorporated through the defects. For C12 the amount of incorporated MB increases as the SAM disorder is increased. This information is essential to the design of efficient thiol-based Au vectors for transport and delivery of molecules as well as thiol-based Au devices for molecular sensing. © 2010 American Chemical Society.

Registro:

Documento: Artículo
Título:Methylene blue incorporation into alkanethiol SAMs on Au(111): Effect of hydrocarbon chain ordering
Autor:Grumelli, D.; Méndez De Leo, L.P.; Bonazzola, C.; Zamlynny, V.; Calvo, E.J.; Salvarezza, R.C.
Filiación:Instituto de Investigaciones Fisicoquímicas Teóricas y Aplicadas, 1900 La Plata, Buenos Aires, Argentina
Departamento de Quimica Inorganica, Analitica y Quimica Fisica FCEN, UBA, Ciudad Universitaria, Pabellón II, Buenos Aires, Argentina
Chemistry Department, Acadia University, University Avenue, Wolfville, NS, Canada
Palabras clave:Alkanethiolates; Alkanethiols; Au(1 1 1 ); Electrochemical studies; Hydrocarbon chain length; Hydrocarbon chains; Methylene blue; Molecular sensing; Polarization modulation infrared reflection absorption spectroscopy; Sams; Hydrocarbons; Infrared spectroscopy; Organic polymers; Scanning tunneling microscopy; Self assembled monolayers; Absorption spectroscopy; gold; hydrocarbon; methylene blue; article; chemistry; electrochemistry; infrared spectroscopy; Electrochemistry; Gold; Hydrocarbons; Methylene Blue; Spectroscopy, Fourier Transform Infrared
Año:2010
Volumen:26
Número:11
Página de inicio:8226
Página de fin:8232
DOI: http://dx.doi.org/10.1021/la904594p
Título revista:Langmuir
Título revista abreviado:Langmuir
ISSN:07437463
CODEN:LANGD
CAS:gold, 7440-57-5; methylene blue, 61-73-4; Gold, 7440-57-5; Hydrocarbons; Methylene Blue, 61-73-4
Registro:https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_07437463_v26_n11_p8226_Grumelli

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Citas:

---------- APA ----------
Grumelli, D., Méndez De Leo, L.P., Bonazzola, C., Zamlynny, V., Calvo, E.J. & Salvarezza, R.C. (2010) . Methylene blue incorporation into alkanethiol SAMs on Au(111): Effect of hydrocarbon chain ordering. Langmuir, 26(11), 8226-8232.
http://dx.doi.org/10.1021/la904594p
---------- CHICAGO ----------
Grumelli, D., Méndez De Leo, L.P., Bonazzola, C., Zamlynny, V., Calvo, E.J., Salvarezza, R.C. "Methylene blue incorporation into alkanethiol SAMs on Au(111): Effect of hydrocarbon chain ordering" . Langmuir 26, no. 11 (2010) : 8226-8232.
http://dx.doi.org/10.1021/la904594p
---------- MLA ----------
Grumelli, D., Méndez De Leo, L.P., Bonazzola, C., Zamlynny, V., Calvo, E.J., Salvarezza, R.C. "Methylene blue incorporation into alkanethiol SAMs on Au(111): Effect of hydrocarbon chain ordering" . Langmuir, vol. 26, no. 11, 2010, pp. 8226-8232.
http://dx.doi.org/10.1021/la904594p
---------- VANCOUVER ----------
Grumelli, D., Méndez De Leo, L.P., Bonazzola, C., Zamlynny, V., Calvo, E.J., Salvarezza, R.C. Methylene blue incorporation into alkanethiol SAMs on Au(111): Effect of hydrocarbon chain ordering. Langmuir. 2010;26(11):8226-8232.
http://dx.doi.org/10.1021/la904594p