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dc.contributor.author이영미-
dc.date.accessioned2016-08-28T12:08:25Z-
dc.date.available2016-08-28T12:08:25Z-
dc.date.issued2009-
dc.identifier.issn0003-2700-
dc.identifier.otherOAK-5959-
dc.identifier.urihttps://dspace.ewha.ac.kr/handle/2015.oak/220285-
dc.description.abstractThis paper reports an amperometric nitric oxide (NO) microsensor based on a cone-shaped nanopore-platinized Pt working electrode. The senor was fabricated using the following procedure: (1) a parent nanodisk electrode was prepared by polishing an etched Pt wire (radius = 12.5 μm; dimension of etched tip end point <10 nm) embedded in a glass capillary, (2) the nanodisk Pt was further etched to produce a nanopore (pore opening radius <1 μm; pore depth ∼30 μm), (3) the Pt base surface in the nanopore electrode was platinized electrochemically to improve the sensor sensitivity, and (4) silanization and further modification with the electropolymerized polymeric film [poly(5-amino-1-naphthol)] on the nanoporeplatinized Pt electrode were carried out to obtain the sensor selectivity to NO. The analytical performance of the sensor was characterized. For example, a sensor with a pore opening radius of 797 nm exhibited a decent linear dynamic range (at least for 0.2-1.8 μM), detection limit of < ∼32 nM, response time (t 90%) of < ∼5 s, and sensitivity of 6.5 ± 0.02 pA/nM. This sensor was used successfully as a NO-selective probe tip in scanning electrochemical microscopy (SECM) to obtain a two-dimensional image of the local NO concentrations for an inlaid NO-emitting microdisk film (radius = 12.5 μm) on a glass substrate. © 2009 American Chemical Society.-
dc.languageEnglish-
dc.titleAmperometric nitric oxide microsensor based on nanopore-platinized platinum: The application for imaging NO concentrations-
dc.typeArticle-
dc.relation.issue20-
dc.relation.volume81-
dc.relation.indexSCIE-
dc.relation.indexSCOPUS-
dc.relation.startpage8571-
dc.relation.lastpage8576-
dc.relation.journaltitleAnalytical Chemistry-
dc.identifier.doi10.1021/ac901552m-
dc.identifier.wosidWOS:000270670600040-
dc.identifier.scopusid2-s2.0-70450057280-
dc.author.googleShim J.H.-
dc.author.googleLee Y.-
dc.contributor.scopusid이영미(35237907700)-
dc.date.modifydate20170601133228-
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자연과학대학 > 화학·나노과학전공 > Journal papers
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