Surface-confined polymerization on semiconducting and insulating substrates

半导体和绝缘基材上的表面限制聚合

• 批准号: RGPIN-2014-05636
• 负责人: Gallagher, Mark
• 金额: $ 1.6万
• 依托单位: Lakehead University
• 依托单位国家: 加拿大
• 项目类别: Discovery Grants Program - Individual
• 财政年份: 2017
• 资助国家: 加拿大
• 起止时间: 2017-01-01 至 2018-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=633547
• 关键词: Surface; confined; polymerization; semiconducting; insulating

I have outlined an experimental program to study the formation, structure, and electronic properties of self-organized two-dimensional (2-d) polymers on semiconducting and oxide surfaces. It is now possible to arrange atoms and molecules into structures only a few nanometers in size (one nanometer is the diameter of about of four atoms, or 1/50,000th of a human hair). The resultant structures often represent new materials with unique properties. Rather than building these devices “one atom at a time”, a particularly attractive approach is to utilize a self-organization approach. Self-organization is characterized by the spontaneous formation of organized surface structures at nanometre length scales. With students at Lakehead University we will study the self-organization of two–dimensional organic polymers at semiconducting and oxide surfaces. As part of this proposal we outline a series of experiments to create polymers with conjugation in two dimensions via surface-confined polymerization. Traditional polymerization produces one-dimensional polymer chains. By inducing polymerization on an atomically flat surface we hope to produce polymers with a high degree of order and electronic conjugation in 2-d. We expect the resultant polymers will exhibit unique properties with wide-ranging applications in electronics and nanotechnology. The primary experimental technique we will utilize to study of the resulting polymers is scanning tunneling microscopy (STM). STM can image and measure the electronic properties of surfaces at atomic length scales. With the ability to “see” individual atoms STM has proven to be an extremely valuable tool in nanoscience. As stated the goal of this program is to study surface confined polymerization at semiconducting and oxide surfaces. To date experiments have been performed exclusively on single crystal metal surfaces. I anticipate that progress on the objectives outlined in this proposal will contribute to the development of a new class of organic materials with unique properties and wide ranging application in electronic, optics, and sensor technology.

我已经概述了一个实验计划，以研究半导体和氧化物表面自组织二维（2-d）聚合物的形成，结构和电子性质。现在可以将原子和分子排列成只有几纳米大小的结构（一纳米大约是四个原子的直径，或人类头发的1/50，000）。由此产生的结构通常代表具有独特性能的新材料。与其“一次一个原子”地构建这些设备，一种特别有吸引力的方法是利用自组织方法。自组织的特征在于自发形成纳米尺度的有组织的表面结构。在湖首大学的学生，我们将研究在半导体和氧化物表面的二维有机聚合物的自组织。作为该提案的一部分，我们概述了一系列实验，通过表面限制聚合来创建具有二维共轭的聚合物。传统的聚合产生一维聚合物链。通过在原子级平坦表面上诱导聚合，我们希望能产生具有高度有序性和二维电子共轭的聚合物。我们预计所得聚合物将表现出独特的性能，在电子和纳米技术中具有广泛的应用。我们将利用扫描隧道显微镜（STM）研究所得聚合物的主要实验技术。STM可以在原子尺度上对表面的电子性质进行成像和测量。由于能够“看到”单个原子，STM已被证明是纳米科学中非常有价值的工具。如前所述，该计划的目标是研究在半导体和氧化物表面的表面限制聚合。迄今为止，实验仅在单晶金属表面上进行。我预计，本提案中概述的目标的进展将有助于开发一类新的有机材料，这些材料具有独特的性能，并在电子，光学和传感器技术中具有广泛的应用。