Synthesis of Methanofullerenes for the Fabrication of New Organic Materials: Environmentally Stable Metals and Superconductors

摘要：Wudl本研究的目的是继续开发用于有机金属和高温有机超导体分子前体的分子。将采用三种方法：(a)合成由不同取代的C61和C66组成的新型甲烷富勒烯；(b)利用富电子和超富电子烯烃以及碱金属对甲烷富勒烯C61-C66的周共轭作用制备新材料；(c)以新的电子给体甲烷富勒烯为基础制备新材料。一旦准备好，固体的物理性质将与其他小组合作，利用实验凝聚态物理的最新发展来确定。在科学史上，发现一种新的起始材料用于化学转化，并最终发展出奇异的化合物和新材料，这是一件罕见的事件。巴克敏斯特富勒烯（C60）和富勒烯的发现就是这种情况。富勒烯是碳的球形和椭圆形同素异形体分子家族，在2000℃以上的温度下形成，而大家族中较小的、可分离的和可表征的成员在室温下是活性分子。由于C60（和C70）是一个相对强的电子受体，探索它与一些重氮甲烷的反应是很有意义的。这项研究导致了甲烷富勒烯和类富勒烯、功能化富勒烯的发现。拟议的工作是在同一领域的先前研究的继续。最终，这些和其他相关的新化合物可用于制造新型分子金属和超导体。

Abstract 9500888 Wudl The objective of this research is to continue the development of molecules which are designed to be molecular precursors to organic metals and high-temperature organic superconductors. Three approaches will be pursued: (a) synthesis of new methanofullerenes consisting of variously substituted C61 and C66, (b) preparation of new materials based on periconjugative effects of methanofullerenes C61-C66 with electron rich and super-electron rich olefins as well as alkali metals, and (c) preparation of new materials based on new electron donor methanofullerenes. Once prepared, the physical properties of solids will determined using the latest developments in experimental condensed matter physics, in collaboration with other groups. %%% It is a rare event in the history of science when a new starting material is uncovered for chemical transformations and the eventual development of exotic compounds and novel materials. That is the case with the discovery of buckminsterfullerene (C60 ) and the fullerenes. The family of spherical and oblong molecular allotropes of carbon, the fullerenes are formed at temperatures upward of 2000 C, yet the smaller, isolable and characterizable members of a large family are reactive molecules at room temperature. Because C60 (and C70) is a relatively strong electron acceptor, it is of interest to explore its reactions with a number of diazomethanes. This research has led to the discovery of methanofullerenes and fulleroids, functionalized fullerenes. The proposed work is the continuation of prior studies in the same area. Ultimately, these and other related new compounds may be utilized for the fabrication of novel molecular metals and superconductors.