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Bioinspired catechol-terminated self-assembled monolayers with enhanced adhesion properties
dc.contributor.author | Guardingo, Mireia |
dc.contributor.author | Bellido, Elena |
dc.contributor.author | Miralles Lluma, Rosa |
dc.contributor.author | Faraudo, Jordi |
dc.contributor.author | Sedó, Josep |
dc.contributor.author | Tatay, Sergio |
dc.contributor.author | Verdaguer Prats, Albert |
dc.contributor.author | Busqué, Felix |
dc.contributor.author | Ruiz-Molina, Daniel |
dc.contributor.other | Universitat Politècnica de Catalunya. Departament d'Enginyeria Química |
dc.date.accessioned | 2014-02-11T08:21:24Z |
dc.date.created | 2013-12-19 |
dc.date.issued | 2013-12-19 |
dc.identifier.citation | Guardingo, M. [et al.]. Bioinspired catechol-terminated self-assembled monolayers with enhanced adhesion properties. "Small", 19 Desembre 2013, p. 1-9. |
dc.identifier.issn | 1613-6810 |
dc.identifier.uri | http://hdl.handle.net/2117/21504 |
dc.description.abstract | The role of the catechol moiety in the adhesive properties of mussel proteins and related synthetic materials has been extensively studied in the last years but still remains elusive. Here, a simplified model approach is presented based on a self-assembled monolayer (SAM) of upward-facing catechols thiol-bound to epitaxial gold substrates. The orientation of the catechol moieties is confirmed by spectroscopy, which also showed lack of significant amounts of interfering o-quinones. Local force-distance curves on the SAM measured by atomic force microscopy (AFM) shows an average adhesion force of 45 nN, stronger than that of a reference polydopamine coating, along with higher reproducibility and less statistical dispersion. This is attributed to the superior chemical and topographical homogeneity of the SAM coating. Catechol-terminated SAMs are also obtained on high-roughness gold substrates that show the ability to assemble magnetic nanoparticles, despite their lack of enhanced adhesion at the molecular level. Finally, the influence of the catechol group on the formation and quality of the SAM is explored both theoretically (molecular dynamics simulations) and experimentally using direct-write AFM lithography. |
dc.format.extent | 9 p. |
dc.language.iso | eng |
dc.rights | Attribution-NonCommercial-NoDerivs 3.0 Spain |
dc.rights.uri | http://creativecommons.org/licenses/by-nc-nd/3.0/es/ |
dc.subject | Àrees temàtiques de la UPC::Enginyeria química |
dc.subject.lcsh | Biomimetic polymers |
dc.subject.other | catechol |
dc.subject.other | biomimetic |
dc.subject.other | adhesive surface |
dc.subject.other | SAMs |
dc.subject.other | polydopamine |
dc.title | Bioinspired catechol-terminated self-assembled monolayers with enhanced adhesion properties |
dc.type | Article |
dc.subject.lemac | Biomimètica |
dc.identifier.doi | 10.1002/smll.201302406 |
dc.description.peerreviewed | Peer Reviewed |
dc.relation.publisherversion | http://onlinelibrary.wiley.com/doi/10.1002/smll.201302406/abstract |
dc.rights.access | Restricted access - publisher's policy |
local.identifier.drac | 13031180 |
dc.description.version | Postprint (published version) |
dc.date.lift | 10000-01-01 |
local.citation.author | Guardingo, M.; Bellido, E.; Miralles, R.; Faraudo, J.; Sedó, J.; Tatay, S.; Verdaguer, A.; Busqué, F.; Ruiz-Molina, D. |
local.citation.publicationName | Small |
local.citation.startingPage | 1 |
local.citation.endingPage | 9 |
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