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

基本信息

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

项目摘要

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·桑伯里尼教授得到了化学分析和表面化学计划的支持，该计划直接在表面上直接在表面上进行化学种子介导的一维金纳米棒的生长进行研究。目的是更好地了解生长机制，以便可以使用简单的湿化学方法在表面上合成具有高度控制尺寸和形状的金纳米棒的高产。金纳米颗粒种子将其演变成金纳米棒，将通过微观方法直接监测，并且将研究电势对一维结构生长的影响。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大小和形状的影响。最后，将用原子力显微镜尖端在电极间隙上操纵单个金纳米棒，以研究其大小，形状和功能化对电子特性的影响。这项研究将使如何更好地理解如何控制化学和电化学合成的一维纳米结构的大小和形状，以用于微型化的电子设备。一维金属纳米棒在纳米电子学，化学传感，光谱增强和作为表面等离子体波导中具有潜在的应用。纳米技术还将在本科课程中纳入本科课程，以使学生在职业生涯的早期阶段将学生暴露于这一领域，而本科生将参与这项研究的各个方面。