...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Electroanalysis >Modelling mobile species dynamics within electroactive films under mixed thermodynamic and kinetic control
【24h】

Modelling mobile species dynamics within electroactive films under mixed thermodynamic and kinetic control

机译：在混合热力学和动力学控制下模拟电活性膜中的流动物种动力学

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

The mobile species (ion and solvent) content of permselective electroactive films can be represented in 3D compositional space, where the three components are potential (E), charge (Q) and solvent population (Gamma(s)). Having introduced this concept for films undergoing redox switching under thermodynamic control with ideal solvation characteristics, it was previously shown how one could introduce the additional complexity of non-ideal solvation characteristics, or slow charge (electron/ion) transfer kinetics, or slow solvent transfer kinetics. Here, the facility is developed to incorporate any combination of these complexities, providing a more realistic model for "typical" electroactive films. Additionally, the possibility of "asymmetry" in the entry and exit rates of mobile species is considered. A range of specific kinetic and thermodynamic scenarios is explored for a cyclic voltammetric potential control function and represented in (E,Q, Gamma s)-space and through solvent:ion flux ratios. These integral and differential compositional representations are directly applicable to experimental data from a wide range of in situ techniques and allow simple visualization and qualitative recognition of specific behavioral types. The responses vary significantly with potential scan rate, underscoring the value of varying experimental timescale in order to highlight specific phenomena and thereby evaluate the relevant thermodynamic or kinetic parameters.
机译：选择性电活性膜的可移动物质（离子和溶剂）含量可以3D组成空间表示，其中三个成分是电势（E），电荷（Q）和溶剂总量（Gamma）。已经为在理想的溶剂化特性下在热力学控制下经历氧化还原转换的薄膜引入了这一概念，先前已证明了如何引入非理想溶剂化特性的额外复杂性，缓慢的电荷（电子/离子）转移动力学或缓慢的溶剂转移动力学。在这里，开发该设备以结合这些复杂性的任何组合，从而为“典型”电活性膜提供更逼真的模型。另外，还考虑了流动物种进入和退出速率“不对称”的可能性。探索了一系列特定的动力学和热力学方案，用于循环伏安电势控制功能，并以（E，Q，Gamma s）-空间和溶剂：离子通量比表示。这些积分和差分组成表示可直接应用于来自各种原位技术的实验数据，并允许对特定行为类型进行简单的可视化和定性识别。响应随潜在扫描速率而显着变化，强调了变化的实验时间标度的值，以便突出特定现象，从而评估相关的热力学或动力学参数。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号