Electrochemical STM study of the adsorption of adenine on Au(111) electrodes

4 pags., 2 figs.

Detalles Bibliográficos
Autores: Vaz Domínguez, C., Escudero-Escribano, María, Cuesta, Angel, Prieto-Dapena, F., Cerrillos, C., Rueda, M.
Tipo de recurso: artículo
Estado:Versión aceptada para publicación
Fecha de publicación:2013
País:España
Institución:Consejo Superior de Investigaciones Científicas (CSIC)
Repositorio:DIGITAL.CSIC. Repositorio Institucional del CSIC
OAI Identifier:oai:digital.csic.es:10261/202008
Acceso en línea:http://hdl.handle.net/10261/202008
Access Level:acceso abierto
Palabra clave:Adenine adsorption
Au(111) electrodes
Electrochemical scanning tunneling microscopy
Surface reconstruction
π-Stacking
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spelling Electrochemical STM study of the adsorption of adenine on Au(111) electrodesVaz Domínguez, C.Escudero-Escribano, MaríaCuesta, AngelPrieto-Dapena, F.Cerrillos, C.Rueda, M.Adenine adsorptionAu(111) electrodesElectrochemical scanning tunneling microscopySurface reconstructionπ-Stacking4 pags., 2 figs.An electrochemical scanning tunneling microscopy (EC-STM) study of the adsorption of adenine on Au(111) electrodes was undertaken in the pH range between 1 and 7, aiming at achieving a deeper knowledge on the structure and organization of adenine chemisorbed on gold and at confirming previous conclusions obtained from combined electrochemical and in situ IR spectroscopy measurements. This study confirms that chemisorption of adenine induces the lifting of the Au(111) surface reconstruction. Furthermore, the 4% excess gold atoms of the reconstructed surface, which are expelled during lifting of the reconstruction, do not diffuse away from the reconstruction rows. We observe, in contrast, the formation of nanometric islands arranged forming chains along the directions previously followed by the reconstruction solitons. Chemisorbed adenine adlayers consist of short chains of adenine molecules roughly aligned along the three main crystallographic directions of the substrate and stabilized by π stacking. These chains tend to align parallel to each other, forming very small domains and yielding an adlayer with a very short-range order. The same adlayer structure is observed at all the studied pH values. The STM results also confirm that, in very acidic media, and at low potentials, adenine adsorbs very weakly on the reconstructed Au(111) surface. © 2013 Elsevier B.V.Financial support from the Spanish Ministry of Science and Technology (CTQ2009-07017 and CTQ2010-19823) and from the Junta de Andalucia (PAI FQM202) is gratefully acknowledged. C. Vaz-Dominguezacknowledges a JAE Doc Fellowship from CSICElsevier BVMinisterio de Ciencia y Tecnología (España)Junta de AndalucíaConsejo Superior de Investigaciones Científicas (España)Consejo Superior de Investigaciones Científicas [https://ror.org/02gfc7t72]2020202020132020info:eu-repo/semantics/articlehttp://purl.org/coar/resource_type/c_6501Postprintinfo:eu-repo/semantics/acceptedVersionhttp://hdl.handle.net/10261/202008reponame:DIGITAL.CSIC. Repositorio Institucional del CSICinstname:Consejo Superior de Investigaciones Científicas (CSIC)Inglés#PLACEHOLDER_PARENT_METADATA_VALUE##PLACEHOLDER_PARENT_METADATA_VALUE#MCyT/CTQ2009-07017MCyT/CTQ2010-19823http://dx.doi.org/10.1016/j.elecom.2013.07.045Síinfo:eu-repo/semantics/openAccessoai:digital.csic.es:10261/2020082026-05-22T06:33:51Z
dc.title.none.fl_str_mv Electrochemical STM study of the adsorption of adenine on Au(111) electrodes
title Electrochemical STM study of the adsorption of adenine on Au(111) electrodes
spellingShingle Electrochemical STM study of the adsorption of adenine on Au(111) electrodes
Vaz Domínguez, C.
Adenine adsorption
Au(111) electrodes
Electrochemical scanning tunneling microscopy
Surface reconstruction
π-Stacking
title_short Electrochemical STM study of the adsorption of adenine on Au(111) electrodes
title_full Electrochemical STM study of the adsorption of adenine on Au(111) electrodes
title_fullStr Electrochemical STM study of the adsorption of adenine on Au(111) electrodes
title_full_unstemmed Electrochemical STM study of the adsorption of adenine on Au(111) electrodes
title_sort Electrochemical STM study of the adsorption of adenine on Au(111) electrodes
dc.creator.none.fl_str_mv Vaz Domínguez, C.
Escudero-Escribano, María
Cuesta, Angel
Prieto-Dapena, F.
Cerrillos, C.
Rueda, M.
author Vaz Domínguez, C.
author_facet Vaz Domínguez, C.
Escudero-Escribano, María
Cuesta, Angel
Prieto-Dapena, F.
Cerrillos, C.
Rueda, M.
author_role author
author2 Escudero-Escribano, María
Cuesta, Angel
Prieto-Dapena, F.
Cerrillos, C.
Rueda, M.
author2_role author
author
author
author
author
dc.contributor.none.fl_str_mv Ministerio de Ciencia y Tecnología (España)
Junta de Andalucía
Consejo Superior de Investigaciones Científicas (España)
Consejo Superior de Investigaciones Científicas [https://ror.org/02gfc7t72]
dc.subject.none.fl_str_mv Adenine adsorption
Au(111) electrodes
Electrochemical scanning tunneling microscopy
Surface reconstruction
π-Stacking
topic Adenine adsorption
Au(111) electrodes
Electrochemical scanning tunneling microscopy
Surface reconstruction
π-Stacking
description 4 pags., 2 figs.
publishDate 2013
dc.date.none.fl_str_mv 2013
2020
2020
2020
dc.type.none.fl_str_mv info:eu-repo/semantics/article
http://purl.org/coar/resource_type/c_6501
Postprint
info:eu-repo/semantics/acceptedVersion
format article
status_str acceptedVersion
dc.identifier.none.fl_str_mv http://hdl.handle.net/10261/202008
url http://hdl.handle.net/10261/202008
dc.language.none.fl_str_mv Inglés
language_invalid_str_mv Inglés
dc.relation.none.fl_str_mv #PLACEHOLDER_PARENT_METADATA_VALUE#
#PLACEHOLDER_PARENT_METADATA_VALUE#
MCyT/CTQ2009-07017
MCyT/CTQ2010-19823
http://dx.doi.org/10.1016/j.elecom.2013.07.045
Sí
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.publisher.none.fl_str_mv Elsevier BV
publisher.none.fl_str_mv Elsevier BV
dc.source.none.fl_str_mv reponame:DIGITAL.CSIC. Repositorio Institucional del CSIC
instname:Consejo Superior de Investigaciones Científicas (CSIC)
instname_str Consejo Superior de Investigaciones Científicas (CSIC)
reponame_str DIGITAL.CSIC. Repositorio Institucional del CSIC
collection DIGITAL.CSIC. Repositorio Institucional del CSIC
repository.name.fl_str_mv
repository.mail.fl_str_mv
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score 15,812429

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