Seed-Mediated Growth of Gold Nanorods Directly on Surfaces: Growth Mechanism, Functionalization, and Electronic Properties

种子介导的金纳米棒直接在表面上的生长：生长机制、功能化和电子特性

• 批准号: 0518561
• 负责人: Francis Zamborini
• 金额: $ 31万
• 依托单位: University of Louisville Research Foundation Inc
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 2005
• 资助国家: 美国
• 起止时间: 2005-08-15 至 2009-01-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0518561&HistoricalAwards=false
• 关键词: Seed; Mediated; Growth; Gold; Nanorods

Professor Francis P. Zamborini of the University of Louisville is supported by the Analytical and Surface Chemistry Program in the Division of Chemistry to conduct research on the chemical seed-mediated growth of one-dimensional gold nanorods directly on surfaces. The goal is to gain a better understanding of the growth mechanism so that high yields of gold nanorods with highly controlled size and shape can be synthesized and assembled on surfaces using simple wet chemical methods. The evolution of gold nanoparticle seeds into gold nanorods will be directly monitored by microscopic methods, and the effect of electrical potential on the growth of one-dimensional structures will be studied. The role of the initial seed structure in the seed-mediated growth process and the effect of the amount of reducing agent and surfactant on the size and shape of the nanostructures will be investigated. Finally individual gold nanorods will be manipulated across electrode gaps with an atomic force microscopy tip in order to study the effect of their size, shape, and functionalization on their electronic properties. This research will lead to a better understanding of how to control the size and shape of chemically and electrochemically synthesized one-dimensional nanostructures to be used in miniaturized electronic devices. One-dimensional metal nanorods have potential applications in nanoelectronics, chemical sensing, spectroscopy enhancement, and as surface plasmon waveguides. Nanotechnology will also be incorporated into the undergraduate curriculum to expose students to this field at an early stage of their career, and undergraduate students will participate in all aspects of this research.

路易斯维尔大学的弗朗西斯P. Zamborini教授得到化学系分析和表面化学项目的支持，对直接在表面上生长的一维金纳米棒进行化学种子介导的研究。 我们的目标是更好地了解生长机制，以便使用简单的湿化学方法合成和组装具有高度控制的尺寸和形状的高产量金纳米棒。 金纳米粒子种子到金纳米棒的演变将通过显微镜方法直接监测，并将研究电势对一维结构生长的影响。 将研究初始种子结构在种子介导的生长过程中的作用以及还原剂和表面活性剂的量对纳米结构的尺寸和形状的影响。 最后，将用原子力显微镜尖端在电极间隙中操纵单个金纳米棒，以研究它们的大小、形状和功能化对其电子性质的影响。 这项研究将导致更好地了解如何控制化学和电化学合成的一维纳米结构的尺寸和形状，以用于小型化电子设备。 一维金属纳米棒在纳米电子学、化学传感、光谱增强和表面等离子体波导等方面具有潜在的应用。 纳米技术也将被纳入本科课程，让学生在职业生涯的早期阶段接触到这一领域，本科生将参与这项研究的各个方面。