Induction current of conducting polymers in magnetic field

导电聚合物在磁场中的感应电流

• 批准号: 08650974
• 负责人: AOKI Koichi
• 金额: $ 1.54万
• 依托单位: Fukui University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (C)
• 财政年份: 1996
• 资助国家: 日本
• 起止时间: 1996 至 1998
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-08650974/
• 关键词: magnetic effect; induced current; polyaniline; conducting polymers; scattering light; fructal; ポリチオフェン; インダクタンス; キャパシティー; メモリー効果; ヒステリシス; ポリアニリン膜; 磁気誘導電流; サイクリックボルタンメトリー

We found that a polyaniline film in the electrically conducting state induced current when it was in magnetic field. The current was not detected when the film was resistive. Since it increased stepwise at a percolation threshold potential, it cannot be explained by ordinary magnetic effects by Lorentz force. It may be caused by molecular coils of the conducting state.The induced current varied with intensity with the magnetic field, the magnetic frequency, thickness of the film, a doping level, and pH of the solution. It seems to be related with a macroscopic size of conducting domains. As an extension of the magnetic field effect, we developed measurements of scattering light in order to determine the size of the macroscopic domains. A visible laser was shone on the potentiostated polyaniline films, and the scattering light intensity was detected as a function of scattering angles. The scattering light was not due to Raleigh scattering but included interference, By the analysis of variaqtion of the light intensity with the angles, we found the presence of conducting clusters 5 mum in diamter, which could be detcted through a microscope. The size increased with a time of potential application, showing a linear variation of the size with the logarithmic time.

我们发现，在磁场中，在电导状态引起的电流中的聚苯胺膜。膜电阻时未检测到电流。由于它在渗透阈值电位上增加了逐步增加，因此无法通过洛伦兹力的普通磁效应来解释它。它可能是由导电态的分子线圈引起的。感应电流随磁场，磁性频率，膜的厚度，掺杂水平和溶液的pH而变化。它似乎与导电域的宏观大小有关。作为磁场效应的扩展，我们开发了散射光的测量值，以确定宏观域的大小。可见的激光在电固化的聚苯胺膜上发光，并检测到散射光强度作为散射角的函数。散射光不是归因于罗利散射，而是包括干扰，通过分析光强度的变异性，我们发现存在直径5妈妈的导电簇的存在，这可以通过显微镜捕获。随着潜在应用的时间，尺寸增加了，显示了对数时间的尺寸线性变化。

项目成果

M.A.Vnotyntsen, C.Reslouis, M.M.Mustans, B.Tribley, K.Aoki: "Transport across an ebolioaetin polymer film in contact with media allouing both roic and electrons inte facial" Electrochim.Acta. 44. 2105-2115 (1999)

M.A.Vnotyntsen、C.Reslouis、M.M.Mustans、B.Tribley、K.Aoki：“在与介质接触的埃博利阿汀聚合物薄膜上进行传输”Electrochim.Acta。

K.Aoki, Y.Teragishi, M.Tokieda: "Light scattoring of polyanilene films responding to electrochemical switching" J.Electroanal.Chem.(in press).

K.Aoki、Y.Teragishi、M.Tokieda：“聚苯胺薄膜的光散射响应电化学开关”J.Electroanal.Chem.（印刷中）。

K.Aoki, J.Li: "Apparent negative activation energy in electrociemical insulating FP-condiacting conversion at poly msthylthiophene tilms" J.Elactroancls Chem.(in press). (1998)

K.Aoki、J.Li：“聚甲基噻吩薄膜的电化学绝缘 FP 传导转换中的表观负活化能”J.Elactroancls Chem.（正在印刷中）。

M.A.Vorotyntsou, C.Deslows, M.M.Mulians, B.Tribollet, K.Aoki: "Transport acros an autoactive polyma film in contact with media allowing both ionic and electronic interfropal" Electrochim.Acta. 44. 2105-2115 (1999)

M.A.Vorotyntsou、C.Deslows、M.M.Mulians、B.Tribollet、K.Aoki：“在与允许离子和电子间质相互作用的介质接触的自活性聚合物薄膜上进行传输”Electrochim.Acta。

J.Li, K.Aoki: "Electrochemical gelation of poly(3-hexylthiophas)film" J.Electroanal.Chem.453. 107-112 (1998)

J.Li，K.Aoki：“聚（3-己基硫磷）膜的电化学凝胶”J.Electroanal.Chem.453。