Crossed Supersonic Molecular Beam Studies of the Reaction Dynamics of Fullerness

富勒反应动力学的交叉超音速分子束研究

• 批准号: 9308183
• 负责人: William Jackson
• 金额: $ 32.3万
• 依托单位: University of California-Davis
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 1993
• 资助国家: 美国
• 起止时间: 1993-07-01 至 1997-06-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9308183&HistoricalAwards=false
• 关键词: Crossed; Supersonic; Molecular; Beam; Studies

In this project in the Physical Chemistry Program of the Chemistry Division, Prof. W.M. Jackson of the University of California at Davis will perform a series of investigations on the reaction dynamics of two fullerene compounds composed of 60 and 70 carbon atoms each, reacting with molecules belonging to families known as free radicals, and those characterized by weak bonds, large electron affinities, and low ionization potentials. The experiments are to be done with a newly constructed molecular beam machine built expressly for the purpose of these studies. %%% Fullerenes comprise a recently discovered class of chemical compounds of carbon atoms in which the locations of these atoms originally defined a nearly spherically shaped geodesic surface. The appellation "fullerene" is used in recognition of Buckminster Fuller whose architectural researches on geodesic domes popularized such structures. A fullerene composed of 60 carbon atoms has the atoms located at the corners of pentagons and hexagons, these regular polygons forming a closed surface just like that of a soccer ball. Such a cluster of atoms is therefore also popularly referred to as a "Buckyball". The generic term fullerene is now commonly applied to refer to such atomic clusters irrespective of their actual numbers of composing atoms, and its use has now been extended to also include tubular structures. Fullerenes are found to be unusually stable and, even though originally thought to be rare in nature, can actually be easily made and are found in a variety of substances as a result of chemical processes. Due to the potential of technological applications, fullerenes are the subject of intense investigations of their physical, chemical, and material properties. Their chemical reactivities are not well understood and the purpose of this fundamental research project is to contribute to the knowledge base of these systems and thereby help in their eventual exploitation for technological applications.

在这个项目中的物理化学计划的 化学部，W.M.教授芝加哥大学的杰克逊 加州戴维斯将进行一系列调查， 两种富勒烯化合物的反应动力学， 和70个碳原子，与属于 被称为自由基的家族，以及那些特征在于 弱键、大电子亲合势和低电离 潜力 实验将用一种新的 建造分子束机器专门为 这些研究的目的。 %%% 富勒烯是最近发现的一类化学物质， 碳原子的位置 最初定义了一条近似球形的测地线 面 “富勒烯”这个名称是用来表彰 富勒的建筑学研究 穹顶使这种结构流行起来。 富勒烯由60个 碳原子的原子位于五边形的角上 和六边形，这些正多边形形成一个封闭的表面 就像足球一样。 这样的原子团是 因此也被普遍称为“巴克球”。的 通用术语富勒烯现在通常用于指这样的 原子团簇，而不管它们的实际数量， 组成原子，它的用途现在已经扩展到也 包括管状结构。 富勒烯被发现是 异常稳定，即使最初被认为是罕见的， 在自然界中，实际上可以很容易地制造， 由于化学过程而产生的各种物质。 由于 对于技术应用的潜力，富勒烯是 对他们的身体状况进行深入调查， 化学和材料特性。 它们的化学反应性 还没有被很好地理解，这一基本原则的目的 研究项目是为了促进知识基础， 这些系统，从而有助于他们最终的开发 用于技术应用。