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Fabrication of Single Cylindrical Au-Coated Nanopores with Non-Homogeneous Fixed Charge Distribution Exhibiting High Current Rectifications

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Fabrication of Single Cylindrical Au-Coated Nanopores with Non-Homogeneous Fixed Charge Distribution Exhibiting High Current Rectifications

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dc.contributor.author Nasir, Saima es_ES
dc.contributor.author Ali, Mubarak es_ES
dc.contributor.author Ramirez Hoyos, Patricio es_ES
dc.contributor.author Gómez Lozano, Vicente es_ES
dc.contributor.author Oschmann, Bernd es_ES
dc.contributor.author Muench, Falk es_ES
dc.contributor.author Tahir, Muhammad Nawaz es_ES
dc.contributor.author Zentel, Rudolf es_ES
dc.contributor.author Mafe, Salvador es_ES
dc.contributor.author Ensinger, Wolfgang es_ES
dc.date.accessioned 2015-12-01T11:00:51Z
dc.date.issued 2014-08
dc.identifier.issn 1944-8244
dc.identifier.uri http://hdl.handle.net/10251/58369
dc.description.abstract We have designed and characterized a cylindrical nanopore that exhibits high electrochemical current rectification ratios at low and intermediate electrolyte concentrations. For this purpose, the track-etched single cylindrical nanopore in polymer membrane is coated with a gold (Au) layer via electroless plating technique. Then, a non-homogeneous fixed charge distribution inside the Au-coated nanopore is obtained by incorporating thiol-terminated uncharged poly(N-isopropylacrylamide) (PNIPAM) chains in series to poly(4-vinyl pyridine) (PVP) chains, which are positively charged at acidic pH values. The functionalization reaction is checked by measuring the current–voltage (I–V) curves prior to and after the chemisorption of polymer chains. The experimental nanopore characterization includes the effects of temperature, adsorption of chloride ions, electrolyte concentration, and pH of the external solutions. The results obtained are further explained in terms of a theoretical continuous model. The combination of well-established chemical procedures (thiol and SAM formation chemistry, electroless plating, ion track etching) and physical models (two-region pore and Nernst-Planck equations) permits to obtain a new nanopore with high current rectification ratios. The single pore could be scaled up to multipore membranes of potential interest for pH sensing and chemical actuators. es_ES
dc.description.sponsorship P.R., V.G., and S.M. acknowledge the financial support from the Generalitat Valenciana (Project PROMETEO/GV/0069), Ministry of Science and Innovation of Spain, Materials Program (Project MAT2012-32084), and FEDER. M.A., S.N., and W.E. thank Prof. C. Trautmann and crew (GSI, Department of Materials Research) for support with irradiation experiments. en_EN
dc.language Inglés es_ES
dc.publisher American Chemical Society es_ES
dc.relation Generalitat Valenciana PROMETEO/GV/0069 es_ES
dc.relation Ministry of Science and Innovation of Spain, Materials Program MAT2012-32084 es_ES
dc.relation FEDER es_ES
dc.relation.ispartof ACS Applied Materials and Interfaces es_ES
dc.rights Reserva de todos los derechos es_ES
dc.subject Synthetic nanopores es_ES
dc.subject Chemical functionalization es_ES
dc.subject Stimuli-responsive polymers es_ES
dc.subject Current rectification es_ES
dc.subject Electroless gold plating es_ES
dc.subject Nernst−Planck equations es_ES
dc.subject.classification FISICA APLICADA es_ES
dc.title Fabrication of Single Cylindrical Au-Coated Nanopores with Non-Homogeneous Fixed Charge Distribution Exhibiting High Current Rectifications es_ES
dc.type Artículo es_ES
dc.embargo.lift 10000-01-01
dc.embargo.terms forever es_ES
dc.identifier.doi 10.1021/am502419j
dc.rights.accessRights Cerrado es_ES
dc.contributor.affiliation Universitat Politècnica de València. Departamento de Física Aplicada - Departament de Física Aplicada es_ES
dc.description.bibliographicCitation Nasir, S.; Ali, M.; Ramirez Hoyos, P.; Gómez Lozano, V.; Oschmann, B.; Muench, F.; Tahir, MN.... (2014). Fabrication of Single Cylindrical Au-Coated Nanopores with Non-Homogeneous Fixed Charge Distribution Exhibiting High Current Rectifications. ACS Applied Materials and Interfaces. 6(15):12486-12494. doi:10.1021/am502419j es_ES
dc.description.accrualMethod Senia es_ES
dc.relation.publisherversion http://dx.doi.org/10.1021/am502419j es_ES
dc.description.upvformatpinicio 12486 es_ES
dc.description.upvformatpfin 12494 es_ES
dc.type.version info:eu repo/semantics/publishedVersion es_ES
dc.description.volume 6 es_ES
dc.description.issue 15 es_ES
dc.relation.senia 281305 es_ES


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