Gradient Doping of Conducting Polymer Films by Means of Bipolar Electrochemistry

Ishiguro, Yutaka; Inagi, Shinsuke; Fuchigami, Toshio

doi:10.1021/la200464t

Cited by 112 publications

(95 citation statements)

References 30 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…First, a poly(3-methylthiophene) (P3MT) film was prepared on an indium tin oxide (ITO) working electrode using potential sweep electropolymerization, and then, this film was placed into a U-type cell equipped with a Pt anode and a Pt cathode connected to a constant current power supply containing 5 mM Bu 4 NPF 6 /MeCN (Figure 2a). 15 On the BPE, the side facing the cathode acted as an anodic surface, and the other side acted as a cathodic surface with a sigmoidal profile. When the potential difference between both poles was above the threshold for the anodic reaction (electrochemical doping) and cathodic reaction (reduction of contaminating water and/or oxygen), these reactions simultaneously occurred on the BPE.…”

Section: Gradient Doping Of Conducting Polymersmentioning

confidence: 99%

Fabrication of gradient polymer surfaces using bipolar electrochemistry

Inagi

2015

Polym J

Self Cite

View full text Add to dashboard Cite

This report focuses on recent developments using bipolar electrochemistry as an effective tool for the fabrication of gradient polymer surfaces. The electrochemical doping and reactions of conducting polymers under an applied potential distribution using bipolar electrodes have been carried out to prepare conducting polymers with composition gradients. Indirect electrolysis using an electrogenerated metal catalyst on bipolar electrodes successfully afforded gradually modified polymer surfaces and gradient polymer brushes using vinyl monomers. The newly designed cylinder bipolar electrode system is available for site-selective applications of electric potentials, which produced electrochemical patterning of conducting polymer films.

show abstract

Section: Gradient Doping Of Conducting Polymersmentioning

confidence: 99%

Fabrication of gradient polymer surfaces using bipolar electrochemistry

Inagi

2015

Polym J

Self Cite

View full text Add to dashboard Cite

show abstract

“…12 In addition, bipolar electrochemistry mechanisms have been utilized in industrial processes for many decades. 13,14 Other recent applications of bipolar electrochemistry include synthesis and manipulation of nanomaterials, 15–18 and fast screening of electrocatalysts. 19 A unique aspect of bipolar electrochemistry is that it uses an electrode with opposite polarity on two ends to allow for direct coupling of two different redox reactions.…”

Section: Introductionmentioning

confidence: 99%

Steady-State Voltammetry of a Microelectrode in a Closed Bipolar Cell

2012

View full text Add to dashboard Cite

Here we report the theory and experimental study of the steady-state voltammetric behavior of a microelectrode used as a limiting pole in a closed bipolar electrochemical cell. We show that the steady-state voltammetric response of a microelectrode used in a closed bipolar cell can be quantitatively understood by considering the responses of both poles in their respective conventional two-electrode setups. In comparison to a conventional electrochemical cell the voltammetric response of the bipolar cell has a similar sigmoidal shape and limiting current, however, the response is often slower than that of the typical two-electrode setup. This leads to a broader voltammogram and a decreased wave slope which can be somewhat misleading and appear that the process being studied is irreversible when it instead can be a result of the coupling of two reversible processes. We show that a large limiting current on the excess pole would facilitate the observation of a faster voltammetric response and both redox concentration and electrode area of the excess pole affect the wave shape. Both factors should be maximized in electroanalytical experiments in order to obtain fast voltammetric responses on the main electrode of interest and to detect quick changes in analyte concentrations.

show abstract

“…Ishiguro et al have reported several kinds of bipolar patterning on conducting polymer films [13,14]. However, to our knowledge, no attempt has been made so far to employ bipolar electrochemistry for fabricating conducting polymer patterns.…”

Section: Introductionmentioning

confidence: 99%