Poly(3-methylthiophene)-coated electrodes: optical and electrical properties as a function of redox potential and amplification of electrical and chemical signals using poly(3-methylthiophene)-based microelectrochemical transistors

doi:10.1021/J100269A048

Paper

Poly(3-methylthiophene)-coated electrodes: optical and electrical properties as a function of redox potential and amplification of electrical and chemical signals using poly(3-methylthiophene)-based microelectrochemical transistors

Published Aug 15, 1985 · J. Thackeray, H. White, M. Wrighton

The Journal of Physical Chemistry

UNKNOWN SJR score

260

Citations

1

Influential Citations

Full textSemantic Scholar

Abstract

Abstract : Optical and electrical properties of anodically grown poly-3-methythiophene are reported as a function of redox potential in CH3CN/0.1M (n-Bu4N)ClO4. Poly-3-methylthiophene can be grown by the oxidation of 3-methylthiophene and deposited onto Au or Pt electrode surfaces. A pair of poly-3-methylthiophene-connected microelectrodes can function as a transistor where one of the electrodes is regarded as 'source' and the other as 'drain' with the source being referenced to the solution as a gate. The poly-3-methylthiophene is the analogue of the channel of a solid state field effect transistor, since its conductivity changes by 100,000,000 depending on the potential. Large optical (300-800 nm) and electrical changes for the poly-3-methylthiophene occur between approx. +0.3 V and approx. +0.8 V vs. SCE. The reduced material has an absorption maximum at 490 nm and the oxidized material has an absorption maximum at 750 nm. The optical density changes parallel the resistant changes that occur as the potential of the polymer changes between approx. +0.3 and approx. +0.8 V vs. SCE. The charging of a 1.5 micrometer thick film of poly-3-methylthiophene involves approx. 10,000 time more charge per unit of projected area then a smooth Pt electrode, consistent with a large effective internal surface area for the conducting polymer.

Highly Cited

Study Snapshot

Poly(3-methylthiophene)-coated electrodes can act as microelectrochemical transistors, a promising device for amplification of electrical and chemical signals.

PopulationOlder adults (50-71 years)

Sample size24

MethodsObservational

OutcomesBody Mass Index projections

ResultsSocial networks mitigate obesity in older groups.

Sign up to use Study Snapshot

Consensus is limited without an account. Create an account or sign in to get more searches and use the Study Snapshot.

Create an account

Paper

Poly(3-methylthiophene)-coated electrodes: optical and electrical properties as a function of redox potential and amplification of electrical and chemical signals using poly(3-methylthiophene)-based microelectrochemical transistors

Sign up to use Study Snapshot

References

Citations

Synthesis and Electropolymerization of a Selenophene Based Chemiluminescent Monomer and Its Use in Blood Detection

S 2 T-Lum, a new selenophene-based chemiluminescent compound, shows potential for blood detection in forensic science due to its sensitiveness to copper and iron ions and blood samples.

Insight into conjugated polymers for organic electrochemical transistors

Organic electrochemical transistors (OECTs) show promise for low-voltage and high-sensitivity bioelectronics, with performance influenced by the conjugated polymers used as channel materials.

Semiconducting Polymers for Neural Applications

Semiconducting polymers show potential in improving electrical and mechanical properties of tissue-device interfaces in neural applications, with potential for increased biocompatibility.

Organic Electrochemical Transistors: An Emerging Technology for Biosensing

Organic electrochemical transistors (OECTs) show promise for biosensor applications, with potential for widespread clinical prevalence with optimized channel materials, creative device architectures, and operational nuances.

Operando Characterization of Organic Mixed Ionic/Electronic Conducting Materials.

Operando characterization techniques reveal structure-property relationships in organic mixed ionic/electronic conductors, aiding in the development of new materials and devices.