OXYGEN SENSORS BASED ON THE IONICALLY CONDUCTIVE POLYMER POLY(DIMETHYLDIALLYLAMMONIUM CHLORIDE)

被引：10

作者：

TIEMAN, RS

HEINEMAN, WR

JOHNSON, J

SEGUIN, R

机构：

[1] UNIV CINCINNATI,EDISON SENSOR TECHNOL CTR,BIOMED CHEM RES CTR,CINCINNATI,OH 45221

[2] UNIV CINCINNATI,DEPT CHEM,CINCINNATI,OH 45221

[3] YELLOW SPRINGS INSTRUMENTS CO INC,YELLOW SPRINGS,OH 45387

来源：

SENSORS AND ACTUATORS B-CHEMICAL | 1992年 / 8卷 / 02期

关键词：

D O I：

10.1016/0925-4005(92)80181-V

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

Graphite rods coated with poly(dimethyldiallylammonium chloride), poly(DMDAAC), and subjected to immobilization by gamma-irradiation have been shown to respond linearly to dissolved oxygen concentration. The oxygen is detected electrochemically by reduction at a potential of - 0.40 V versus Ag/AgCl. The concentration range of linearity investigated is 1.4 to 9.3 ppm. The polymer-coated electrode has a sensitivity of 12.5-mu-A cm-2 ppm-1, a detection limit of 1.4 ppm and a response time of 5 min or less. Poly(DMDAAC) also provides the electrode surface with some protection against adsorbing species during the measurement. Further, poly(DMDAAC) can function as the electrolyte in a solid-state cell and allows electrochemical measurements to be made in air in the absence of a supporting electrolyte solution. The response to oxygen concentration in the surrounding atmosphere is shown.

引用

页码：199 / 204

页数：6

共 28 条

[1] RECTIFYING INTERFACES USING 2-LAYER FILMS OF ELECTROCHEMICALLY POLYMERIZED VINYLPYRIDINE AND VINYLBIPYRIDINE COMPLEXES OF RUTHENIUM AND IRON ON ELECTRODES [J].