ISSN:
1433-0768
Keywords:
Key words Conducting polymer
;
Polyindole
;
Electrochemical transistor
Source:
Springer Online Journal Archives 1860-2000
Topics:
Chemistry and Pharmacology
Notes:
Abstract The behaviour of a polyindole-based microelectrochemical transistor in aqueous and non-aqueous electrolytes is described. The polyindole film was grown onto two closely spaced (100 μm) platinum microelectrodes by anodic oxidation of indole (10 mM) from 0.1 M tetrabutylammonium perchlorate in dichloromethane at 1.1 V vs. Ag/AgCl. The polymerization was carried out for a sufficiently long time in order to connect both Pt microelectrodes, which operated as a transistor when immersed in an electrolytic solution. In this transistor, one microelectrode was a “source” and the other a “drain”; the Ag/AgCl wire reference electrode was used as a “gate”. The drain current (current between source and drain) was modulated by varying the gate potential (potential between source and gate) at a fixed drain potential (potential between source and drain). The transconductances of the transistor were estimated as 0.98 mS/cm and 20.6 mS/cm of channel width (separation between two microelectrodes) in aqueous and non-aqueous solutions, respectively.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1007/s100080050200
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