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首页> 外文期刊>Advanced Functional Materials >Biomimetic Structural Electrochemistry from Conducting Polymers: Processes, Charges, and Energies. Coulovoltammetric Results from Films on Metals Revisited
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Biomimetic Structural Electrochemistry from Conducting Polymers: Processes, Charges, and Energies. Coulovoltammetric Results from Films on Metals Revisited

机译：导电聚合物的仿生结构电化学：过程，电荷和能量。再谈金属膜的体积伏安法结果

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摘要

Oxidation/reduction reactions in films of conducting polymers exchanging anions and solvent during reactions are revisited here and explored by voltam-metric and coulovoltammetric results using Pt electrodes coated with films of different polymers, in different solvents and salts. The reactions induce molecular (conformational) and macroscopic (relaxation, swelling, shrinking, and compaction) structural changes. Coulovoltammetric loops constitute a direct graphical tool to identify, separate, and quantify the structural components of the reversible film reactions together the potential domains and the charges involved in irreversible reactions. Any abrupt slope variation is related to abrupt changes of the reaction rate associated with each of the structural induced processes. Charges, energies, and characteristic potentials for any of the structural or irreversible process are obtained. Reversible film reactions are present from -1.5 to 0.35 V versus Ag/AgCl, overlapping the irreversible hydrogen evolution at the metal/polymer interface below -1.1 V. Structural reduction energies are higher than structural oxidation energies and structural changes are energetically asymmetric. 3D reactive structural memories are envisaged stepping up storage density by orders of magnitude. Conducting polymers are 3D structural gel reactors at the polymer chain level: large anions in solution cannot penetrate inside the film. Composition changes and structural processes mimic intracellular matrix (ICM) biological reactions.
机译：本文重新讨论了在反应过程中交换阴离子和溶剂的导电聚合物薄膜的氧化/还原反应，并通过伏安法和体积伏安法对结果进行了探索，该结果使用了涂有不同聚合物，不同溶剂和盐类薄膜的Pt电极。反应引起分子（构象）和宏观（松弛，膨胀，收缩和压实）结构变化。体积伏安回路构成直接的图形工具，用于识别，分离和量化可逆膜反应的结构成分以及不可逆反应中涉及的势域和电荷。任何陡峭的斜率变化都与与每个结构诱导过程相关的反应速率的突变有关。获得了任何结构性或不可逆过程的电荷，能量和特征势。相对于Ag / AgCl，存在-1.5至0.35 V的可逆膜反应，与低于-1.1 V的金属/聚合物界面处不可逆的氢放出重叠。结构还原能高于结构氧化能，结构变化在能量上是不对称的。设想3D反应性结构存储器将存储密度提高几个数量级。导电聚合物是聚合物链级的3D结构凝胶反应器：溶液中的大量阴离子无法渗透到薄膜内部。组成变化和结构过程模拟细胞内基质（ICM）的生物反应。

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  • 来源
    《Advanced Functional Materials》 |2013年第31期|3929-3940|共12页
  • 作者

    Toribio F. Otero; Mercedes Alfaro; Venancio Martinez; Maria A. Perez; Jose C. Martinez;

  • 作者单位

    Centre for Electrochemistry and Intelligent Materials (CEMI). Universidad Politecnica de Cartagena. Aulario Ⅱ Paseo Alfonso XIII, E-30203 Cartagena (Murcia), Spain;

    Centre for Electrochemistry and Intelligent Materials (CEMI). Universidad Politecnica de Cartagena. Aulario Ⅱ Paseo Alfonso XIII, E-30203 Cartagena (Murcia), Spain;

    Centre for Electrochemistry and Intelligent Materials (CEMI). Universidad Politecnica de Cartagena. Aulario Ⅱ Paseo Alfonso XIII, E-30203 Cartagena (Murcia), Spain;

    Centre for Electrochemistry and Intelligent Materials (CEMI). Universidad Politecnica de Cartagena. Aulario Ⅱ Paseo Alfonso XIII, E-30203 Cartagena (Murcia), Spain;

    Centre for Electrochemistry and Intelligent Materials (CEMI). Universidad Politecnica de Cartagena. Aulario Ⅱ Paseo Alfonso XIII, E-30203 Cartagena (Murcia), Spain;

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