ISSN:
1572-8838
Source:
Springer Online Journal Archives 1860-2000
Topics:
Chemistry and Pharmacology
,
Electrical Engineering, Measurement and Control Technology
Notes:
Abstract The electrical characteristics of oxidized poly(thionaphtheneindole) were investigated as a function of ambient relative humidity (r.h.). The current flowing through a pressed pellet of material between two massive gold electrodes plotted against voltage gives a wave-shaped curve with a halfwave potential at V 〈$〉=〈$〉~3V. The current recorded at 4V (plateau of the wave) is a sigmoidal function of r.h. with the inflexion point at ~60%. An interpretation of these findings is given, based on the influence of water on the dielectric constant of the material and on acid–base equilibrium between poly(thionaphtheneindole) and water, from which protons are produced. The behaviour of poly (thionaphtheneindole) as the active component of an amperometric humidity sensor is also reported.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1023/A:1018417821896
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