- -

Nernst-Planck model of photo-triggered, pH-tunable ionic transport through nanopores functionalized with "caged" lysine chains

RiuNet: Institutional repository of the Polithecnic University of Valencia

Share/Send to

Cited by

Statistics

Nernst-Planck model of photo-triggered, pH-tunable ionic transport through nanopores functionalized with "caged" lysine chains

Show simple item record

Files in this item

dc.contributor.author Nasir, Saima es_ES
dc.contributor.author Ramirez Hoyos, Patricio es_ES
dc.contributor.author Ali, Mubarak es_ES
dc.contributor.author Ahmed, Ishtiaq es_ES
dc.contributor.author Fruk, Ljiliana es_ES
dc.contributor.author Mafé, Salvador es_ES
dc.contributor.author Ensinger, Wolfgang es_ES
dc.date.accessioned 2014-10-22T10:02:41Z
dc.date.available 2014-10-22T10:02:41Z
dc.date.issued 2013-01-21
dc.identifier.issn 0021-9606
dc.identifier.uri http://hdl.handle.net/10251/43473
dc.description.abstract We describe the fabrication of asymmetric nanopores sensitive to ultraviolet (UV) light, and give a detailed account of the divalent ionic transport through these pores using a theoretical model based on the Nernst-Planck equations. The pore surface is decorated with lysine chains having pH-sensitive (amine and carboxylic acid) moieties that are caged with photo-labile 4,5-dimethoxy- 2-nitrobenzyl (NVOC) groups. The uncharged hydrophobic NVOC groups are removed using UV irradiation, leading to the generation of hydrophilic “uncaged” amphoteric groups on the pore surface. We demonstrate experimentally that polymer membranes containing single pore and arrays of asymmetric nanopores can be employed for the pH-controlled transport of ionic and molecular analytes. Comparison between theory and experiment allows for understanding the individual properties of the phototriggered nanopores, and provides also useful clues for the design and fabrication of multipore membranes to be used in practical applications. © 2013 American Institute of Physics. es_ES
dc.description.sponsorship The authors would like to thank Miguel Ferrandez and Juan Pablo Arranz for assistance in the preparation of the artwork. P. R. and S. M. acknowledge financial support from the Ministerio de Economia y Competitividad (Projects Nos. MAT2009-07747 and MAT2012-32084), the Generalitat Valenciana (Project No. PROMETEO/GV/0069), and FEDER. S.N., M. A., and W. E. gratefully acknowledge financial support by the Beilstein-Institut, Frankfurt/Main, Germany, within the research collaboration NanoBiC, and L. F. and I. A. DFG-CFN Excellence Initiative Project A5.7. The authors thank Dr. Christina Trautmann from GSI (Materials research group) for support with the heavy ion irradiation experiments, and Dr. M. N. Tahir (Mainz University) for fruitful discussions and help in performing the UV light irradiation experiments. en_EN
dc.language Inglés es_ES
dc.publisher American Institute of Physics (AIP) es_ES
dc.relation Ministerio de Economia y Competitividad [MAT2009-07747 y MAT2012-32084] es_ES
dc.relation Generalitat Valenciana [PROMETEO/GV/0069] es_ES
dc.relation FEDER es_ES
dc.relation Beilstein-Institut, Frankfurt/Main, Germany, within the research collaboration NanoBiC es_ES
dc.relation DFG-CFN Excellence Initiative [A5.7] es_ES
dc.relation.ispartof Journal of Chemical Physics es_ES
dc.rights Reserva de todos los derechos es_ES
dc.subject Channels es_ES
dc.subject Transistors es_ES
dc.subject Selectivity es_ES
dc.subject Field es_ES
dc.subject Membranes es_ES
dc.subject Dna analysis es_ES
dc.subject Single nanochannel es_ES
dc.subject Solid-state nanopores es_ES
dc.subject Nanofluidic diode es_ES
dc.subject Synthetic conical nanopores es_ES
dc.subject.classification FISICA APLICADA es_ES
dc.title Nernst-Planck model of photo-triggered, pH-tunable ionic transport through nanopores functionalized with "caged" lysine chains es_ES
dc.type Artículo es_ES
dc.identifier.doi 10.1063/1.4775811
dc.rights.accessRights Abierto es_ES
dc.contributor.affiliation Universitat Politècnica de València. Departamento de Física Aplicada - Departament de Física Aplicada es_ES
dc.description.bibliographicCitation Nasir, S.; Ramirez Hoyos, P.; Ali, M.; Ahmed, I.; Fruk, L.; Mafé, S.; Ensinger, W. (2013). Nernst-Planck model of photo-triggered, pH-tunable ionic transport through nanopores functionalized with "caged" lysine chains. Journal of Chemical Physics. 138(3):034709-1-034709-11. doi:10.1063/1.4775811 es_ES
dc.description.accrualMethod S es_ES
dc.relation.publisherversion http://dx.doi.org/10.1063/1.4775811 es_ES
dc.description.upvformatpinicio 034709-1 es_ES
dc.description.upvformatpfin 034709-11 es_ES
dc.type.version info:eu-repo/semantics/publishedVersion es_ES
dc.description.volume 138 es_ES
dc.description.issue 3 es_ES
dc.relation.senia 239302


This item appears in the following Collection(s)

Show simple item record