Electrochemical studies of some conducting polythiophene films

Electrochemical synthesis of polythiophene–polyacrylamide composite coatings used for ..

Electrochemical synthesis and characterization of …

This paper describes the synthesis and characterisation of amine-templated mesoporous titanium oxide with polythiophene nanowires in the pores. These materials were designed to improve the electron conductivity of the ca. 1000 m2/g mesostructure in order to exploit the redox sites within the pores. An in depth characterisation of the synthesised composites including an electrochemical assessment of these materials is presented, and compared to the pristine mesoporous titanium oxide. The results demonstrate successful synthesis of conducting nanowires within the pores of the mesoporous titanium oxides by utilising vapour diffusion and subsequent in situ polymerisation, whilst retaining the mesostructure of the titanium oxide host. The mesoporous titanium oxide produced a peak capacity of 301 mAh/g at current densities of 0.2 mA cm−2. The polythiophene nanowires improve the conductivity of the material with a slight drop in capacity.

T1 - Synthesis and characterization of polythiophene and poly (3-methylthiophene) nanotubes and nanowires

Electrochemical Synthesis of a Water ..

Understanding ion transport processes in electrically conducting polymers is very important in the light of possible application of these materials in chemical or biosensors. In this work we have studied the ion transport in the electrochemically synthesized inherently conducting polymer poly(3,4-ethylenedioxythiophene) (PEDOT) induced by the redox switching of the polymer. Mass changes during the synthesis and redox switching of the film have been monitored in-situ by Electrochemical Quartz Crystal Microbalance (EQCM). By doping the conducting polymer film with electroactive materials such as ferrocyanide ions (FCN) the release of the different oxidation state species during the voltage cycling of the polymeric film could be monitored on-line by Scanning Electrochemical Microscopy (SECM). Direct evidence of the exchange capability of Fe(CN)6]4-/3- anions entrapped in PEDOT/FCN film with Cl- anion from the solution and doping levels were found by computing the experimental data provided by SECM and EQCM techniques. In addition, SECM measurements showed that during reduction of the PEDOT/FCN films only the release of [Fe(CN)6]4- ion occurs.

This copolymerisation approach offers a versatile route to the synthesis of metal dithiolene–polythiophene hybrid films.

This copolymerisation approach offers a versatile route to the synthesis of metal dithiolene–polythiophene hybrid films. Full text not available from this repository.

21/01/2002 · Electrochemical synthesis of a pyridinium ..


12.2 Synthesis and properties of LC polythiophene ..

N2 - Understanding ion transport processes in electrically conducting polymers is very important in the light of possible application of these materials in chemical or biosensors. In this work we have studied the ion transport in the electrochemically synthesized inherently conducting polymer poly(3,4-ethylenedioxythiophene) (PEDOT) induced by the redox switching of the polymer. Mass changes during the synthesis and redox switching of the film have been monitored in-situ by Electrochemical Quartz Crystal Microbalance (EQCM). By doping the conducting polymer film with electroactive materials such as ferrocyanide ions (FCN) the release of the different oxidation state species during the voltage cycling of the polymeric film could be monitored on-line by Scanning Electrochemical Microscopy (SECM). Direct evidence of the exchange capability of Fe(CN)6]4-/3- anions entrapped in PEDOT/FCN film with Cl- anion from the solution and doping levels were found by computing the experimental data provided by SECM and EQCM techniques. In addition, SECM measurements showed that during reduction of the PEDOT/FCN films only the release of [Fe(CN)6]4- ion occurs.

By understanding the oCVD polythiophene synthesis parameters ..

Polythiophene films have been electrochemically deposited onto uncoated and coated with polyacrylamide steel mesh. It has been found that the specific capacitance of the polythiophene film deposited on a sublayer of polyacrylamide was 30% higher than of the film of polythiophene deposited on the steel mesh without the underlayer.

• Electrochemical synthesis of nanostructured layers of ..

This paper describes the synthesis and characterisation of amine-templated mesoporous titanium oxide with polythiophene nanowires in the pores. These materials were designed to improve the electron conductivity of the ca. 1000 m2/g mesostructure in order to exploit the redox sites within the pores. An in depth characterisation of the synthesised composites including an electrochemical assessment of these materials is presented, and compared to the pristine mesoporous titanium oxide. The results demonstrate successful synthesis of conducting nanowires within the pores of the mesoporous titanium oxides by utilising vapour diffusion and subsequent in situ polymerisation, whilst retaining the mesostructure of the titanium oxide host. The mesoporous titanium oxide produced a peak capacity of 301 mAh/g at current densities of 0.2 mA cm−2. The polythiophene nanowires improve the conductivity of the material with a slight drop in capacity.