CAREER: Rational Synthesis and Studies of Functionalized Carbon Nanotubes

该项目基于以前的研究，通过去除无定形碳和金属杂质来纯化单壁碳纳米管（SWNTs），并提供了一种将传统化学方法推广到SWNT侧壁和表面的新方法，将进一步探索所得臭氧化管的性能。由于臭氧分解预计将在单壁碳纳米管的侧壁中引入孔，因此本项目旨在执行（i）这些材料中电子结构和键合的光谱验证和（ii）吸附测量以分析孔隙度的程度。 主要目标是证明化学操作（即臭氧分解）可以以有利的、可控的方式影响纳米级性质。为了进一步说明这些臭氧化管的多功能性，将使用纳米管表面上预期丰度的含氧基团来接种量子点的形成，以产生新的分层组件。研究生，本科生和高中生将参与这项研究的各个方面，并在这样做，将利用独特的资源，也可在设施，通过布鲁克海文国家实验室。此外，学生将有机会在年度跨学科的Stony Brook-BNL纳米科学研讨会上展示他们的研究。这种安排确实扩大了他们的教育和职业机会。%单壁碳纳米管（SWNTs）被认为具有许多广泛的潜在经济应用，包括作为催化剂载体、场发射体、高强度纤维、传感器、致动器、气体存储介质以及作为下一代电子器件的分子导线。了解单壁碳纳米管的化学性质对于合理和有利地操纵其性质至关重要。已经表明，在臭氧存在下的单壁碳纳米管产生的产物不仅非常纯，而且假设在其侧壁中含有孔，这对于气体储存应用是重要的。此外，合成的臭氧化的基于SWNT-SiO2的异质结构对于设计分子尺度计算设备可能是关键的。从教学的角度来看，PI将强调独特的跨学科纳米科学研究机会在布鲁克海文国家实验室斯托尼布鲁克本科生和研究生以及高中学生，特别是从代表性不足的群体，通过实验室图尔斯，会谈，课程和研讨会的混合物。提出的多方面战略将培养训练有素的跨学科学生，随时准备作出重大的技术和社会有益的贡献。

This project, based on previous studies resulting in an ozonolysis protocol that purifies single-walled carbon nanotubes (SWNTs) by removing amorphous carbon and metal impurities and provides a new means for generalizing traditional chemistry to SWNT sidewalls and surfaces, will explore further the properties of the resultant ozonized tubes. Because ozonolysis is expected to introduce holes into the sidewalls of SWNTs, this project aims to perform (i) spectroscopic verification of electronic structure and bonding in these materials and (ii) adsorption measurements to analyze the extent of porosity. The main goal is to demonstrate that chemical manipulation (i.e. ozonolysis) can affect nanoscale properties in a favorable, controllable manner. To further illustrate the versatility of these ozonized tubes, the expected abundance of oxygenated groups on the nanotube surface will be used to seed the formation of quantum dots so as to create novel hierarchical assemblies. Graduate, undergraduate, and high-school students will participate in all aspects of this research and in so doing, will take advantage of the unique resources also available at facilities available through the Brookhaven National Laboratory. Moreover, students will have the opportunity to present their research at an annual interdisciplinary Stony Brook-BNL nanoscience symposium. This arrangement truly widens their educational and career possibilities.%%%Single-walled carbon nanotubes (SWNTs) are thought to have a host of wide-ranging, potential economic applications including as catalyst supports, field emitters, high strength fibers, sensors, actuators, gas storage media, and as molecular wires for the next generation of electronics devices. Understanding the chemistry of SWNTs is critical to rational and favorable manipulation of their properties. It has been shown that SWNTs in the presence of ozone result in a product that is not only very pure, but also hypothesized to contain holes in its sidewalls, important for gas storage applications. Furthermore, synthesized ozonized SWNT- nanocrystal based heterostructures may be critical for devising molecular scale computing devices. From a teaching perspective, the PI will emphasize unique interdisciplinary nanoscience research opportunities at Brookhaven National Laboratory to Stony Brook undergraduate and graduate students as well as to high school students, especially from underrepresented groups, through a mixture of laboratory tours, talks, courses, and workshops. The multifaceted strategy proposed will generate highly-trained interdisciplinary students, ready to make significant technical and socially beneficial contributions.***