Methylene blue incorporation into alkanethiol SAMs on Au(111): Effect of hydrocarbon chain ordering

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 i...

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Autores principales: Grumelli, Doris E., Mendez De Leo, Lucila Paula, Bonazzola, Cecilia, Calvo, Ernesto Julio
Publicado: 2010
Materias:
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
Methylene Blue
Spectroscopy, Fourier Transform Infrared
Acceso en línea:https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_07437463_v26_n11_p8226_Grumelli
http://hdl.handle.net/20.500.12110/paper_07437463_v26_n11_p8226_Grumelli
Aporte de:
Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires
id paper:paper_07437463_v26_n11_p8226_Grumelli
record_format dspace
spelling paper:paper_07437463_v26_n11_p8226_Grumelli2023-06-08T15:44:56Z Methylene blue incorporation into alkanethiol SAMs on Au(111): Effect of hydrocarbon chain ordering Grumelli, Doris E. Mendez De Leo, Lucila Paula Bonazzola, Cecilia Calvo, Ernesto Julio 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 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. Fil:Grumelli, D. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. Fil:Méndez De Leo, L.P. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. Fil:Bonazzola, C. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. Fil:Calvo, E.J. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. 2010 https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_07437463_v26_n11_p8226_Grumelli http://hdl.handle.net/20.500.12110/paper_07437463_v26_n11_p8226_Grumelli
institution Universidad de Buenos Aires
institution_str I-28
repository_str R-134
collection Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA)
topic 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
spellingShingle 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
Grumelli, Doris E.
Mendez De Leo, Lucila Paula
Bonazzola, Cecilia
Calvo, Ernesto Julio
Methylene blue incorporation into alkanethiol SAMs on Au(111): Effect of hydrocarbon chain ordering
topic_facet 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
description 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.
author Grumelli, Doris E.
Mendez De Leo, Lucila Paula
Bonazzola, Cecilia
Calvo, Ernesto Julio
author_facet Grumelli, Doris E.
Mendez De Leo, Lucila Paula
Bonazzola, Cecilia
Calvo, Ernesto Julio
author_sort Grumelli, Doris E.
title Methylene blue incorporation into alkanethiol SAMs on Au(111): Effect of hydrocarbon chain ordering
title_short Methylene blue incorporation into alkanethiol SAMs on Au(111): Effect of hydrocarbon chain ordering
title_full Methylene blue incorporation into alkanethiol SAMs on Au(111): Effect of hydrocarbon chain ordering
title_fullStr Methylene blue incorporation into alkanethiol SAMs on Au(111): Effect of hydrocarbon chain ordering
title_full_unstemmed Methylene blue incorporation into alkanethiol SAMs on Au(111): Effect of hydrocarbon chain ordering
title_sort methylene blue incorporation into alkanethiol sams on au(111): effect of hydrocarbon chain ordering
publishDate 2010
url https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_07437463_v26_n11_p8226_Grumelli
http://hdl.handle.net/20.500.12110/paper_07437463_v26_n11_p8226_Grumelli
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AT mendezdeleolucilapaula methyleneblueincorporationintoalkanethiolsamsonau111effectofhydrocarbonchainordering
AT bonazzolacecilia methyleneblueincorporationintoalkanethiolsamsonau111effectofhydrocarbonchainordering
AT calvoernestojulio methyleneblueincorporationintoalkanethiolsamsonau111effectofhydrocarbonchainordering
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