发明授权
US5002651A Modified microelectrodes with renewable surface and method of making same
失效
具有可再生表面的改性微电极及其制造方法
- 专利标题: Modified microelectrodes with renewable surface and method of making same
- 专利标题(中): 具有可再生表面的改性微电极及其制造方法
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申请号: US319984申请日: 1989-03-07
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公开(公告)号: US5002651A公开(公告)日: 1991-03-26
- 发明人: Brenda R. Shaw , Kenneth E. Creasy
- 申请人: Brenda R. Shaw , Kenneth E. Creasy
- 申请人地址: CT Storrs
- 专利权人: University of Connecticut
- 当前专利权人: University of Connecticut
- 当前专利权人地址: CT Storrs
- 主分类号: G01N27/30
- IPC分类号: G01N27/30 ; G01N27/333 ; G01N27/38 ; H01M4/86
摘要:
Renewable composite microelectrodes for electrochemical applications are formed by an initial coating on an elongated conductive substrate of less than 500 micrometers over at least a portion of its length with a modifier composition, and a superposed coating of electronically resistive polymer. The initial coating is exposed only at the tip portion of the microelectrode. The initial coating may be an absorbed layer of the modifier, a homogeneous layer of a polymeric matrix with the modifier dispersed therein, or a layer of a polymer with a modifier in its chain. The modifier provides distinctive properties to the surface of the electrode which may be electroactivity, inclusion, acidic/basic, complexing/chelating or electrocatalysis. The microelectrode will normally be used with only the tip portion thereof immersed in the solution, and it may be renewed by removing the contaminated tip portion.
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