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.

在化学测量和成像计划的支持下，匹兹堡大学的Shigeru Amemiya教授及其小组将利用纳米核酸酯（一个宽度为10 nm的缝隙）开发出新型的电化学方法，该方法将循环伏击（CV）与Scanning EleptroChemical Microsmospeph（cv）结合在一起。在Amemiya实验室中开发的基于纳米类的方法克服了广泛使用的CV和SECM方法的局限性，并在侧面异构表面上以极高的速率以极高的速率实现了全新的界面电荷转移反应的测量。多功能的纳米电解化学方法将有助于表征纳米材料，例如单层石墨烯和电催化纳米颗粒，以及研究在液体/液体/液体Interface上的氧化还原活性自组装单层和离子离子转移的快速电荷转移反应（例如电子转移）。这样的研究将大大增强我们对界面电荷转移反应的了解和理解，这是能量转化和存储中未来技术发展的基础，分子电子设备以及离子传感和分离，除了在各种科学领域的基本进步外，尤其是在电化学领域，Nansceince和Nansceceince和材料科学。通过商业化量身定制的纳米电极和共享模拟程序进行数据分析，将加速基于NanoGAP的电化学方法作为科学界的常规实验工具的实施。电化学研究在本科教学中的整合将通过开发基于铅笔的伏安级电极作为一种教育工具来促进，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特性。