Nanogap Electrochemistry of Interfacial Charge-Transfer Reactions

界面电荷转移反应的纳米间隙电化学

• 批准号: 1213452
• 负责人: Shigeru Amemiya
• 金额: $ 40万
• 依托单位: University of Pittsburgh
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2012
• 资助国家: 美国
• 起止时间: 2012-08-15 至 2015-07-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1213452&HistoricalAwards=false
• 关键词: Nanogap; Electrochemistry; Interfacial; Charge; Transfer

With support from the Chemical Measurement and Imaging Program in the Division of Chemistry, Professor Shigeru Amemiya at University of Pittsburgh and his group will be utilizing a nanogap (a gap with a width of 10 nm) to develop the novel electrochemical method that combines cyclic voltammetry (CV) with scanning electrochemical microscopy (SECM). The nanogap-based approach that was developed in the Amemiya laboratory overcomes the limitations of widely used CV and SECM methods and enables completely new measurements of interfacial charge-transfer reactions at extremely high rates on laterally heterogeneous surfaces. The versatile nanoelectrochemical method will be useful for the characterization of nanomaterials such as monolayer graphene and electrocatalytic nanoparticles, as well as for investigation of rapid charge-transfer reactions such as electron transfer at redox-active self-assembled monolayers and ion transfer at liquid/liquid interfaces. Such studies will massively augment our knowledge and understanding of interfacial charge-transfer reactions, which are the basis of future technological developments in energy conversion and storage, molecular electronics, and ion sensing and separation in addition to fundamental advancements in various scientific areas, especially, in electrochemistry, nanosceince, and material science. The implementation of the nanogap-based electrochemical method as a routine experimental tool among scientific community will be accelerated by commercializing tailor-made nanoelectrodes and by sharing simulation programs for data analysis. The integration of the electrochemical research into undergraduate teaching will be promoted by the development of pencil-lead-based voltammetric electrodes as an educational tool to discover the lipophilicity of various ions as the critical molecular property related to their environmental toxicity and pharmaceutical activity.

在化学部化学测量和成像计划的支持下，匹兹堡大学的Shigeru Amemiya教授及其团队将利用纳米间隙（宽度为10 nm的间隙）开发新型电化学方法，该方法将循环伏安法（CV）与扫描电化学显微镜（SECM）相结合。Amemiya实验室开发的基于纳米间隙的方法克服了广泛使用的CV和SECM方法的局限性，并能够在横向异质表面上以极高的速率对界面电荷转移反应进行全新的测量。多功能的纳米电化学方法将是有用的表征纳米材料，如单层石墨烯和电催化纳米粒子，以及快速的电荷转移反应，如在氧化还原活性的自组装单分子膜和离子转移在液/液界面的调查。这些研究将极大地增加我们对界面电荷转移反应的知识和理解，这是未来能量转换和储存，分子电子学，离子传感和分离技术发展的基础，以及各个科学领域的基本进步，特别是电化学，纳米科学和材料科学。通过将定制的纳米电极商业化和共享用于数据分析的模拟程序，将加速基于纳米间隙的电化学方法作为科学界常规实验工具的实施。将促进电化学研究融入本科教学的发展铅基伏安电极作为一种教育工具，以发现各种离子的亲脂性作为与其环境毒性和药物活性相关的关键分子性质。