CAREER: Rational Synthesis and Studies of Functionalized Carbon Nanotubes

该项目基于先前的研究成果，通过去除无定形碳和金属杂质来净化单壁碳纳米管（SWNTs），并为将传统化学推广到SWNT侧壁和表面提供了一种新的手段，将进一步探索所得臭氧化管的性质。由于臭氧分解预计会在swnt的侧壁上引入孔洞，因此该项目旨在进行(i)对这些材料的电子结构和键合进行光谱验证，以及（ii）吸附测量以分析孔隙度。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，纳米管表面预期的丰富的含氧基团将用于量子点的形成，从而创建新的分层组装。研究生、本科生和高中生将参与这项研究的各个方面，在这样做的过程中，将利用布鲁克海文国家实验室提供的独特资源。此外，学生将有机会在一年一度的跨学科石溪- bnl纳米科学研讨会上展示他们的研究。这种安排确实拓宽了他们的教育和职业可能性。单壁碳纳米管（SWNTs）被认为具有广泛的、潜在的经济应用，包括作为催化剂载体、场发射体、高强度纤维、传感器、致动器、气体存储介质和下一代电子设备的分子线。理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。研究表明，臭氧存在下的单壁碳纳米管产品不仅非常纯净，而且假设其侧壁含有孔，这对储气应用很重要。此外，合成臭氧化的SWNT-纳米晶体异质结构可能是设计分子尺度计算设备的关键。从教学的角度来看，该项目将强调布鲁克海文国家实验室独特的跨学科纳米科学研究机会，以石溪大学的本科生和研究生以及高中生，特别是来自代表性不足的群体，通过实验室参观，讲座，课程和研讨会的混合。所提出的多方面战略将培养出训练有素的跨学科学生，随时准备做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.***