GAS SENSOR
PROBLEM TO BE SOLVED: To enhance the thermal stability of a gas sensor which uses a conductive polymer membrane. SOLUTION: Two comb-shaped electrodes 3, 3 are formed on a glass substrate 1, and a conductive polymer membrane which is composed of poly(3'-n-octyl-2,2'; 5',2"-terthio...
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Main Authors | , , , , |
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Format | Patent |
Language | English |
Published |
03.03.2000
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Edition | 7 |
Subjects | |
Online Access | Get full text |
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Summary: | PROBLEM TO BE SOLVED: To enhance the thermal stability of a gas sensor which uses a conductive polymer membrane. SOLUTION: Two comb-shaped electrodes 3, 3 are formed on a glass substrate 1, and a conductive polymer membrane which is composed of poly(3'-n-octyl-2,2'; 5',2"-terthiophene) is formed on the surface of the electrodes 3, 3 as a sensitive membrane 7. The conductive polymer membrane is doped with FeCl3 as a dopant. Since side chains exist every two residual groups in the poly(3'-n-octyl-2,2'; 5',2"-terthiphene), a spatial margin in which the dopant exists is obtained. In addition, since the side chains are situated regularly as compared with poly(3'-n- octyl-2,2'-bithiophene), the random property of the distribution of the dopant is reduced. When the poly(3'-n-octyl-2,2'; 5',2"-terthiphene) is used for the sensitive membrane, the thermal stability of a gas sensor is enhanced. |
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Bibliography: | Application Number: JP19980163849 |