Redox, Electronic, and Rectifying Response of Five- and Six-coordinate Metallosurfactants in Solution, as Films, and on Electrodes

五配位和六配位金属表面活性剂在溶液、薄膜和电极上的氧化还原、电子和整流响应

• 批准号: 1500201
• 负责人: Claudio Verani
• 金额: $ 44.9万
• 依托单位: Wayne State University
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2015
• 资助国家: 美国
• 起止时间: 2015-05-01 至 2019-04-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1500201&HistoricalAwards=false
• 关键词: Redox; Electronic; Rectifying; Response; Five

In this project funded by the Macromolecular, Supramolecular and Nanochemistry Program of the Division of Chemistry, Professor Cláudio N. Verani and his research group at Wayne State University in Detroit are studying metal-based molecules able to act as diodes for electric current rectification. Rectification, or directional current flow from an electrode A to an electrode B (but not from B back to A) is fundamental to the conversion of alternating into direct current, and is absolutely necessary for electronic data computation. This interdisciplinary proposal seeks to enhance our fundamental understanding on the use of metallosurfactants for molecular diodes. Broader impacts include scientific outreach to fourth and fifth graders and effort to promote Latino-student inclusion in STEM research.Verani and collaborators are studying the redox, electronic, and rectifying behavior of metallosurfactants, both in solution and as Langmuir-Blodgett monolayer films deposited onto gold electrodes. Therefore, this interdisciplinary program focuses on the use of amphiphilic coordination complexes towards current-rectifying assemblies as measured by the asymmetry of current/potential (I/V) curves aiming to understand (i) the predominant rectification mechanisms in metallosurfactants; (ii) the possibility of electron-transfer mediation in metal-based singly occupied molecular orbitals (SOMOs); (iii) the viability of electron transfer mediation by metals between ligand-centered lowest unoccupied & highest occupied molecular orbitals (LUMOS & HOMOs); (iv) the role of metallosurfactant orientation in the mechanism of rectification; (v) the influence of the metallosurfactant geometry in observed symmetric conduction, unimolecular or asymmetric rectification, or insulation. This research is multi-faceted, incluidng efforts to make strides in synthetic methodologies, and in electrochemical, spectroscopic, computational, isothermal compression, and microscopy methods.

在这个由化学系大分子、超分子和纳米化学项目资助的项目中，Cláudio N。Verani和他在底特律韦恩州立大学的研究小组正在研究能够作为电流整流二极管的金属基分子。整流或从电极A到电极B（但不是从B回到A）的定向电流是交流电转换为直流电的基础，并且对于电子数据计算是绝对必要的。这一跨学科的建议旨在提高我们对金属表面活性剂用于分子二极管的基本理解。 更广泛的影响包括对四年级和五年级学生的科学宣传，以及促进拉丁裔学生参与STEM研究的努力。Verani和合作者正在研究金属表面活性剂的氧化还原，电子和整流行为，无论是在溶液中还是作为沉积在金电极上的Langmuir-Blodgett单层膜。因此，这个跨学科的计划侧重于使用两亲性配位络合物对电流整流组件作为测量的电流/电位（I/V）曲线的不对称性，旨在了解（i）在金属表面活性剂的主要整流机制;（ii）在金属基单占据分子轨道（SOMO）的电子转移介导的可能性;（iii）在金属表面活性剂中的非对称性。（iii）金属在配体中心的最低未占&最高已占分子轨道（LUMOS& HOMO）之间的电子转移中介的可行性;（iv）金属表面活性剂取向在整流机制中的作用;（v）在观察到的对称传导、单分子或不对称整流或绝缘中金属表面活性剂几何形状的影响。这项研究是多方面的，包括努力在合成方法，电化学，光谱，计算，等温压缩和显微镜方法方面取得进展。