Systematic Development of New Organic Conductors

他们研究计划的主要目的是通过对电子特性的详细了解和化学控制，系统地开发新的有机导体、半导体和超导体。这种方法依赖于合成，物理表征和分析的连贯相互作用，以确定分子结构如何影响有机固体中的分子间相互作用。这些相互作用决定了这些材料的电、磁和光学性质，对化学修饰非常敏感。他们过去基于这种方法的工作在有机供体、受体和自由基盐的创新合成、物理实验和理论方面取得了重大成就。他们的合成计划最初将集中在三个方面：(1)开发合成程序，从而获得长期寻找的供体TMTTeF（四甲基四氟乙烯），TMTSF的te同系物，由此演变成第一个有机超导体；(2)制备一类广泛的四氧亚烯和混合二氧二硫代亚烯供体；(3)制备可以提供更多二维和三维固体相互作用的螺体供体。我们的合成程序的发展将继续依赖于这些化合物的结构、电学、光学和磁性的同步相关研究的指导。在他们项目的电气开关方面，他们希望对这些材料的形成和电气特性有更全面的了解和化学控制，这些材料可以在短时间内可逆地切换相对大量的电流。

The principle aim of their research program is the systematic development of new organic conductors, semiconductors, and superconductors through a detailed understanding and chemical control of the electronic properties. This approach depends on a coherent interplay of synthesis, physical characterization and analysis to determine how molecular structure affects intermolecular interactions in organic solids. These interactions which are responsible for the electrical, magnetic and optical properties of these materials are highly sensitive to chemical modification. Their past work based on this approach has resulted in significant accomplishments in innovative synthesis, physical experiments, and theory of organic donors, acceptors, and radical salts. Their synthetic program will initially focus on three areas: (1) the development of synthetic procedures leading to the long-sought donor TMTTeF (tetramethyltetratellurafulvalene), the Te-congener of TMTSF from which evolved the first organic superconductor; (2) the preparation of a broad class of tetraoxafulvalenes and mixed dioxadithiafulvalenes donors; (3) the preparation of spiro-donors which may provide more two- and three-dimensional solid state interactions. Evolution of our synthetic program will continue to depend on guidance from concurrent correlated studies of the structural, electrical, optical, and magnetic properties of these compounds. In the electrical switching aspect of their program they hope to achieve a more complete understanding and chemical control of the formation and electrical properties of these materials that can reversibly switch relatively large amounts of current in a short time span.