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Derivatization of Pristine Graphene with Well-Defined Chemical Functionalities

具有明确化学功能的原始石墨烯的衍生化

基本信息

批准号：
1112436
负责人：
Mingdi Yan
金额：
$ 37.21万
依托单位：
University of Massachusetts Lowell
依托单位国家：
美国
项目类别：
Standard Grant
财政年份：
2011
资助国家：
美国
起止时间：
2011-10-01 至 2016-09-30
项目状态：
已结题

来源：
https://www.nsf.gov/awardsearch/showAward?AWD_ID=1112436&HistoricalAwards=false
关键词：
Derivatization Pristine Graphene Well Defined

项目摘要

In this project funded by the Macromolecular, Supramolecular and Nanochemistry Program of the Chemistry Division, Mingdi Yan of the University of Massachusetts at Lowell will develop a general method to derivatize graphene and potentially achieve spatial selectivity. The potential of graphene to revolutionize electronics, photonics, and nanocomposite materials has been hampered by the availability and processability of graphene materials. The approach is to photolyze/thermalyze perfluorophenyl azide and its derivatives in the presence of graphene. The transient singlet perfluorphenyl nitrene will undergo a [2+1] cycloaddition with graphene pi-bonds to form aziridine groups on the graphene surface, and there is the potential for selectivity towards pi-bonds at the edge of the graphene sheet. The location of the functional groups will be determined by further derivatization with nanoparticles or C60 and imaging using AFM and TEM. The broader impacts include training female undergraduates and high school girls by engaging them in research, introducing them to strong role models, and dispelling myths surrounding careers for women in STEM. A new science course will be established at a local high school, targeting female students who may not otherwise take STEM courses in high school.This work would advance fundamental knowledge about attaching chemical species to graphene, a sheet-like material composed of a single layer of carbon atoms. The methods developed would allow the preparation of unique electronic materials that could have significant impacts on the fields of electronics and composite materials.

在这个由化学部高分子、超分子和纳米化学项目资助的项目中，马萨诸塞大学洛厄尔分校的 Mingdi Yan 将开发一种通用方法来衍生石墨烯并有可能实现空间选择性。石墨烯彻底改变电子学、光子学和纳米复合材料的潜力受到石墨烯材料的可用性和可加工性的阻碍。该方法是在石墨烯存在下光解/热解全氟苯基叠氮化物及其衍生物。瞬态单线态全氟苯基氮烯将与石墨烯π键发生[2+1]环加成，在石墨烯表面形成氮丙啶基团，并且在石墨烯片边缘存在对π键选择性的潜力。官能团的位置将通过使用纳米颗粒或 C60 进一步衍生化并使用 AFM 和 TEM 成像来确定。更广泛的影响包括通过让女本科生和高中女生参与研究来培训她们、向她们介绍强有力的榜样，以及消除围绕 STEM 领域女性职业的神话。当地一所高中将开设一门新的科学课程，针对那些在高中可能无法学习 STEM 课程的女学生。这项工作将增进有关将化学物质附着在石墨烯（一种由单层碳原子组成的片状材料）上的基础知识。开发的方法将允许制备独特的电子材料，这可能对电子和复合材料领域产生重大影响。