Electrode surface modifications using building block conducting polymers

使用构建块导电聚合物进行电极表面改性

• 批准号: 355797-2011
• 负责人: Chahma, Mhamed
• 金额: $ 1.82万
• 依托单位: Laurentian University of Sudbury
• 依托单位国家: 加拿大
• 项目类别: Discovery Grants Program - Individual
• 财政年份: 2015
• 资助国家: 加拿大
• 起止时间: 2015-01-01 至 2016-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=572659
• 关键词: Electrode; surface; modifications; using; building

Our proposed research program aims at developing and applying an alternative for surface modification using stable conducting materials such as polythiophenes (polypyrroles, polyfurans). Our strategy is based on the deposition of protective conducting layers through electrochemical oxidation on the surface of the electrode. The proposed new approach will help overcome difficulties encountered with traditional methods used for direct organic modifications of solid surfaces and target the deposition of convenient functional groups or bioorganic/biological molecules. The presence of functional groups allows an easier functionalization of the polymers surfaces as well as the introduction of new molecules with different electronic/optical properties. Our approach requires a variety of novel monomers for surface derivatization. To this end, a new methodology for the synthesis of conducting polymer precursors using green chemistry will be developed. These precursors will also generate a series of materials which we expect to exhibit high stability in both doped and undoped states, low band-gap energy and wide range in optical properties, which are important for the construction of biosensors and optical devices. The characterization of the deposited materials onto electrode surfaces will be performed using cyclic voltammetry, scanning electrochemical microscope-tip, UV-vis, infrared, scanning electron microscopy and XPS measurements. The proposed convenient strategies for the organic modification of conducting surfaces will be a powerful tool for recognition purposes. Moreover, studies described in this research program will provide valuable physico-chemical data necessary for the design of more advanced microchip devices.

我们提出的研究计划旨在开发和应用一种使用稳定的导电材料如聚噻吩类(聚吡咯、聚呋喃)进行表面改性的替代方案。我们的策略是通过电化学氧化在电极表面沉积保护性导电层。建议的新方法将有助于克服用于固体表面直接有机修饰的传统方法所遇到的困难，并以方便的官能团或生物有机/生物分子的沉积为目标。官能团的存在使得聚合物表面更容易官能化，以及引入具有不同电子/光学性质的新分子。 我们的方法需要各种新的单体来进行表面衍生化。为此，将开发一种利用绿色化学合成导电聚合物前体的新方法。这些前驱体还将产生一系列材料，我们希望这些材料在掺杂和非掺杂状态下都表现出高度的稳定性，低禁带能量和广泛的光学性质，这对于构建生物传感器和光学器件是重要的。 电极表面沉积材料的表征将使用循环伏安法、扫描电化学显微镜针尖、UV-Vis、红外、扫描电子显微镜和XPS测量进行。所提出的对导电表面进行有机修饰的便捷策略将是用于识别目的的有力工具。此外，这项研究计划中描述的研究将为设计更先进的微芯片器件提供必要的有价值的物理化学数据。