Photoelectrochemical Reactions of Electrodes Modified with Poly(3-hexylthiophene) Nanowires

Yonemura, Hiroaki; Yuno, Koichi; Takata, Masayuki; Yamada, S.

doi:10.1080/15421406.2011.563716

Cited by 4 publications

(8 citation statements)

References 12 publications

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“…For the P3HT nanowires prepared from anisole solution, three absorption bands (515, 551, and 600 nm) were observed, indicating the formation of structures composed of highly ordered polymer chains. [9][10][11] In contrast, these bands were hardly observed in the P3HT films prepared from chlorobenzene solution with and without annealing treatment. The results are in good agreement with the fact that hardly any P3HT nanowires were observed in the AFM (Fig.…”

Section: Methodsmentioning

confidence: 90%

“…The P3HT nanowires were obtained using an anisole solution of P3HT cooled from 353 K to room temperature. [9][10][11] The anisole solutions of P3HT (50 µl) were spin-coated onto the surface of an indium tin oxide (ITO) electrode (surface resistivity: 10 ³/sq.) at 1500 and 2000 rpm for 60 s each using a photoresist spinner (Kyowariken K-359S-1).…”

Section: Methodsmentioning

confidence: 99%

“…3(a)] as reported in previous papers. [9][10][11] The AFM image of the ITO electrode in Fig. 3(a) indicates that there are a number of P3HT nanowires on the electrode.…”

Section: Methodsmentioning

confidence: 99%

“…[1][2][3] Nanowires of regioregular poly(3-alkylthiophene) have been prepared by whisker precipitation in a solution. [4][5][6][7][8][9][10][11] The nanowires are also considered to be promising materials for optoelectronic applications.…”

Section: Introductionmentioning

confidence: 99%

“…9,10) We also reported that the photocurrent of an electrode modified with P3HT nanowires was approximately twice as large as that of an electrode modified with a disordered P3HT film, which is most likely to be because hole hopping between adjacent thiophenes is facilitated in the P3HT nanowires due to ³-³ stacking. 11) The mechanisms of photochemical reactions in the condensed phase have been explained by invoking the magnetic field effects (MFEs) on the reaction kinetics or yields. [12][13][14] Consequently, a magnetic field is expected to provide a novel means of controlling photoinduced electron transfer and subsequent processes.…”

Section: Introductionmentioning

confidence: 99%

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Magnetic field effects on photoelectrochemical reactions of electrodes modified with thin films consisting of conductive polymers

Yonemura¹,

Takata²,

Yamada³

2013

Jpn. J. Appl. Phys.

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The magnetic field effects (MFEs) on the photoelectrochemical reactions of electrodes modified with nanowires consisting of regioregular poly(3-hexylthiophene) (P3HT), disordered P3HT films without and with annealing treatment, and poly[2-methoxy-5-(2-ethylhexyloxy)-1,4-phenylenevinylene] (MEH-PPV) films were examined. In P3HT, the photocurrent increased in the presence of a magnetic field. The magnitude of the MFEs increased in the following order of modified electrodes: P3HT nanowires, P3HT films with annealing treatment, P3HT films without annealing treatment. The difference in the MFEs is most likely to be attributable to the capability of hole hopping between adjacent thiophenes. On the other hand, in MEH-PPV, the photocurrent decreased in the presence of a magnetic field. The MFEs on the photoelectrochemical reactions of electrodes modified with P3HT and MEH-PPV are explained by the polaron pair mechanism. The difference in the MFEs between P3HT and MEH-PPV is ascribed to the spin multiplicity of the polaron pairs.

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Section: Methodsmentioning

confidence: 90%

Section: Methodsmentioning

confidence: 99%

“…3(a)] as reported in previous papers. [9][10][11] The AFM image of the ITO electrode in Fig. 3(a) indicates that there are a number of P3HT nanowires on the electrode.…”

Section: Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Magnetic field effects on photoelectrochemical reactions of electrodes modified with thin films consisting of conductive polymers

Yonemura¹,

Takata²,

Yamada³

2013

Jpn. J. Appl. Phys.

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Conducting polymer-based hybrid assemblies for electrochemical sensing: a materials science perspective

Janáky

Visy

2013

Anal Bioanal Chem

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In this topical review, progress achieved in amperometric sensing of different analytes over conducting polymer-based hybrid electrocatalysts is summarized. We report a variety of synthetic methods and the resulting hybrid assemblies, with the effectiveness of such strategies, for designing conjugated polymer-based hybrids as robust sensors for amperometric detection. Beyond incorporation of metal nanoparticles, metal-oxide and non-oxide semiconductors, carbon-based nanomaterials (nanotubes, graphene, and graphene oxide), and special dopant ions are also discussed. Moreover, some particularly interesting miscellaneous approaches, for example photo-amperometric sensing or use of overoxidized polymers, are also emphasized. Determination of dissolved gases (for example O2, NO, and NO2), ions (sulfite, nitrite, nitrate, chlorate, bromate, and iodate) and smaller and larger molecules (for example H2O2, ascorbic acid (AA), dopamine (DA), urea (UA), amino acids, hydrazine, NADH, serotonin, and epinephrine) is discussed. These achievements are reviewed from the materials perspective, addressing both synthetic and electrocatalytic aspects of the polymer-based modified electrodes. Beyond simple or more sophisticated mixing, a wide range of methods of preparation is presented, including chemical (one-pot polymerization, impregnation), electrochemical (co-deposition, doping type inclusion, etc.) and combined strategies. Classification of such synthetic routes is also included. However, it is important to note that we omit studies in which conducting polymers alone were used for determination of different species. Furthermore, because excellent reviews--cited in this work also--are available on immobilization of biomolecules (for example enzymes) for biosensing purposes, this topic, also, is excluded.

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Magnetic Field Effects on Photoelectrochemical Reactions of Electrodes Modified with Poly(3-hexylthiophene) Nanowires

Yonemura

Takata

Yamada

2013

Molecular Crystals and Liquid Crystals

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Photoelectrochemical Reactions of Electrodes Modified with Poly(3-hexylthiophene) Nanowires

Cited by 4 publications

References 12 publications

Magnetic field effects on photoelectrochemical reactions of electrodes modified with thin films consisting of conductive polymers

Magnetic field effects on photoelectrochemical reactions of electrodes modified with thin films consisting of conductive polymers

Conducting polymer-based hybrid assemblies for electrochemical sensing: a materials science perspective

Magnetic Field Effects on Photoelectrochemical Reactions of Electrodes Modified with Poly(3-hexylthiophene) Nanowires

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