CAREER: CAS-Climate: Molecular Physical Electrochemistry at Interfaces - Visualizing and Modeling Charge Transfer at the Anode and Cathode

在化学系化学结构，动力学和机制-A（CSDM-A）计划的支持下，凯斯西储大学的Lydia Kisley博士正在使用显微镜和建模方法来研究带负电荷的电子和带正电荷的金属离子在金属表面的运动。这些反应与电池和太阳能技术、节能催化反应以及基础设施的腐蚀有关。Kisley博士正在开发显微镜方法，以检测单个电子和离子在小长度尺度下发生反应的时间和地点。与此同时，计算建模方法正在进行，以促进这些实验数据的理解。基斯利博士将在克利夫兰文化花园领导社区活动，将科学，技术，工程和数学（STEM）中代表性不足的群体与科学家在其文化中的历史故事联系起来，使科学更加个性化。凯斯西储大学Kisley实验室的这项CAREER研究旨在从分子尺度上理解单个电子和金属离子如何在电极表面进行反应、扩散和/或溶解，并将其作为空间和时间的函数。单分子实验和统计方法正在开发，揭示详细的能量和物理关系的阳极和阴极反应在金属/液体界面。使用荧光染料的超分辨率分析将观察到原位电荷转移，荧光染料在接收电子或金属离子后打开。实验单分子技术的进展应允许通过将染料应用于金属表面来表征金属离子和电子的电荷转移。然后，染料将在可变溶剂介电环境下用于铁和铁合金表面。该奖项反映了NSF的法定使命，并通过使用基金会的智力价值和更广泛的影响审查标准进行评估，被认为值得支持。

With the support of the Chemical Structure, Dynamics, and Mechanisms-A (CSDM-A) Program in the Division of Chemistry, Dr. Lydia Kisley of Case Western Reserve University is using microscopy and modeling methods to investigate the movement of negatively charged electrons and positively charged metal ions at metal surfaces. These reactions are relevant to battery and solar energy technologies, energy-efficient catalytic reactions, and the corrosion of infrastructure. Dr. Kisley is developing microscopic methods that detect when and where individual electrons and ions undergo reaction at small length scales. In parallel, computational modeling methods are being undertaken to facilitate the understanding of these experimental data. Dr. Kisley will lead community events at the Cleveland Cultural Gardens to connect individuals, including those from underrepresented groups in science, technology, engineering, and mathematics (STEM), to historic stories of scientists in their culture to make science more personably relatable. In addition, she will be mentoring high school girls in research.The research under this CAREER award in the Kisley lab at Case Western Reserve University aims to develop a molecular scale understanding of how individual electrons and metal ions undergo reaction, diffusion, and/or dissolution at electrode surfaces as a function of space and time. Single-molecule experimental and statistical methods are being developed that reveal detailed energetic and physical relationships between anodic and cathodic reactions at metal/liquid interfaces. In situ charge transfer will be observed using super-resolution analysis of fluorescent dyes that turn on after receiving an electron or metal ion. Advances in experimental single-molecule techniques should allow for the characterization of both charge transfer by metal ions and electrons by applying dyes to metallic surfaces. The dyes will then be used at iron and iron alloy surfaces under variable solvent dielectric environments. A stochastic model that includes fluorescent and non-fluorescent reactions is being developed to better understand the mechanisms of the anodic and cathodic experimental reactions.This award reflects NSF's statutory mission and has been deemed worthy of support through evaluation using the Foundation's intellectual merit and broader impacts review criteria.