Full metadata record
DC Field | Value | Language |
---|---|---|
dc.contributor.author | 이영미 | * |
dc.date.accessioned | 2016-08-28T12:08:25Z | - |
dc.date.available | 2016-08-28T12:08:25Z | - |
dc.date.issued | 2009 | * |
dc.identifier.issn | 0003-2700 | * |
dc.identifier.other | OAK-5959 | * |
dc.identifier.uri | https://dspace.ewha.ac.kr/handle/2015.oak/220285 | - |
dc.description.abstract | This 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.language | English | * |
dc.title | Amperometric nitric oxide microsensor based on nanopore-platinized platinum: The application for imaging NO concentrations | * |
dc.type | Article | * |
dc.relation.issue | 20 | * |
dc.relation.volume | 81 | * |
dc.relation.index | SCI | * |
dc.relation.index | SCIE | * |
dc.relation.index | SCOPUS | * |
dc.relation.startpage | 8571 | * |
dc.relation.lastpage | 8576 | * |
dc.relation.journaltitle | Analytical Chemistry | * |
dc.identifier.doi | 10.1021/ac901552m | * |
dc.identifier.wosid | WOS:000270670600040 | * |
dc.identifier.scopusid | 2-s2.0-70450057280 | * |
dc.author.google | Shim J.H. | * |
dc.author.google | Lee Y. | * |
dc.contributor.scopusid | 이영미(35237907700) | * |
dc.date.modifydate | 20240422130854 | * |