Solid-state reference electrode based on electrodeposited nanoporous platinum for microchip

被引:22
作者
Han, Ji-Hyung
Park, Sejin
Boo, Hankil
Kim, Hee Chan
Nho, Jongmin
Chung, Taek Dong
机构
[1] Sungshin Womens Univ, Ctr NanoBio Appl Technol, Seoul 136742, South Korea
[2] Sungshin Womens Univ, Dept Chem, Seoul 136742, South Korea
[3] Seoul Natl Univ, Coll Med, Dept Biomed Engn, Seoul 110744, South Korea
[4] Seoul Natl Univ, Inst Med & Biol Engn, Med Res Ctr, Seoul 110744, South Korea
[5] Nomadien Corp, Seoul 136742, South Korea
关键词
solid-state; reference electrode; nanoporous; platinum; microchip;
D O I
10.1002/elan.200603772
中图分类号
O65 [分析化学];
学科分类号
070302 ; 081704 ;
摘要
A new solid-state reference electrode operating in buffered aqueous solution for electrochemical system on microfluidic chip is reported. The anodized nanoporous platinum showed its usefulness as a solid-state reference electrode owing to near-Nernstian behavior, low hysteresis, and quick response. The presence of redox couples such as Fe(CN)(6)(3-/4-), bringing about significant interference, can be successfully suppressed by an electropolymerized poly-1,3-phenylendiamine (poly-m-PD) layer on the nanoporous platinum surface. Since the poly-m-PD coated nanoporous platinum oxide responds exclusively to pH, its potential should be constant and stable in a buffer solution. The nanoporous platinum oxide with poly-m-PD film is easy to produce and is particularly compatible with microfabrication. The experimental results in this study demonstrate that the proposed system successfully works as a solid-state reference electrode that should be integrated on microchips for microanalysis systems.
引用
收藏
页码:786 / 792
页数:7
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