Controlling Surface Functionalization at the Molecular and Nanoscale Level Via Molecular Layer Deposition

通过分子层沉积在分子和纳米级控制表面功能化

• 批准号: 1213879
• 负责人: Stacey Bent
• 金额: $ 44.1万
• 依托单位: Stanford University
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 2012
• 资助国家: 美国
• 起止时间: 2012-08-15 至 2016-07-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1213879&HistoricalAwards=false
• 关键词: Controlling; Surface; Functionalization; Molecular; Nanoscale

This project funded by the Macromolecular, Supramolecular and Nanochemistry Program of the Chemistry Division, Professor Stacey Bent of Stanford University will carry out studies to better understand the mechanisms of nucleation and growth in molecular-layer deposition (MLD) and to develop new coupling chemistries for the process. Fundamental mechanistic studies will be carried out using well-defined surfaces, in situ and ex situ surface spectroscopies, and carefully chosen molecular systems. Studies are designed to investigate the relationship between competing effects, such as site nucleation and chain termination, in determining how nanoscale organic films grow in MLD and to expand the types of coupling chemistries that allow both monolayer and multilayer film formation at important surfaces. The results will inform molecular and nanoscale surface functionalization for future applications. The broader impacts involve training a diverse group of graduate students, undergraduate researchers, high school teachers and community college interns; broadly disseminating research concepts and results to the scientific community, to the public, and to students; and the potential impacts of MLD research on molecular and nanoscale surface functionalization for applications in electronics.Coating solid materials with organic films as thin as a few nanometers (about 10,000 times smaller than the width of a human hair) is a useful way to modify the properties of the solid and to introduce new behavior. The composition of the nanometer-thin coatings can be controlled by a method in which different organic molecules are deposited onto the surface of the solid in a layer-by-layer fashion. This layer-by-layer method of forming organic films is being explored for a range of applications including integrated circuits, protective coatings, lithographic patterning, and solar cells. A deeper understanding of this process is needed to gain better molecular-level precision and control. This project will study how nanometer-thin organic films grow using these methods and will also develop new chemistries to form the films.

该项目由斯坦福大学化学系高分子、超分子和纳米化学项目资助，斯坦福大学Stacey Bent教授将开展研究，以更好地理解分子层沉积（MLD）中的成核和生长机制，并开发新的偶联化学的过程。基本机理研究将使用明确的表面、原位和异位表面光谱以及精心选择的分子系统进行。研究旨在研究位点成核和链终止等竞争效应之间的关系，以确定纳米级有机薄膜如何在 MLD 中生长，并扩展允许在重要表面形成单层和多层薄膜的偶联化学类型。结果将为未来应用的分子和纳米级表面功能化提供信息。 更广泛的影响包括培训不同群体的研究生、本科生研究人员、高中教师和社区大学实习生；向科学界、公众和学生广泛传播研究理念和成果；以及 MLD 研究对分子和纳米级表面功能化在电子领域的应用的潜在影响。用薄至几纳米（大约比人类头发宽度小 10,000 倍）的有机薄膜涂覆固体材料是一种有效的方法来改性固体的性质并引入新的行为。纳米薄涂层的组成可以通过将不同的有机分子以逐层方式沉积到固体表面的方法来控制。人们正在探索这种形成有机薄膜的逐层方法的一系列应用，包括集成电路、保护涂层、光刻图案和太阳能电池。需要更深入地了解这一过程才能获得更好的分子水平精度和控制。该项目将研究如何使用这些方法生长纳米薄有机薄膜，并将开发新的化学物质来形成薄膜。