CRC: Multi-dimensional Molecular Metals, Crystal Design, and Superconductivity

康奈尔大学的Stephen Lee和Francis J.DiSalvo和马萨诸塞大学的Dhandapani Venkataraman得到了数学和物理科学局化学部和多学科活动办公室的支持，因为他们进行了跨学科合作，旨在开发分子金属的晶体设计战略。他们将研究如何控制有机系统从绝缘态到金属态的转变。由于超导临界温度T_c在含有轻元素的金属中是最高的(即富勒化物和铜氧化物中的碳和氧)，因此本研究将集中在一些截然不同的多维有机金属上。重要的多维晶体设计参数，如堆积效率、局域偶极-偶极相互作用、疏水-亲水相互作用、氢键和配位键，将被描绘出来。在这些体系中，将包括多维pi配位分子网络、酞菁和与pi有机化合物偶联的无机簇合物，将研究电子结构对T_c-的影响，并与有机半导体中的空穴和电子迁移率问题联系起来。化学合作研究奖(CRC)颁发给致力于广泛化学兴趣问题的科学家的跨学科团队。这些奖项的重点是研究和培训的新合作模式。

Stephen Lee and Francis J. DiSalvo of Cornell University and Dhandapani Venkataraman of the University of Massachusetts are supported by the Division of Chemistry and the Office of Multidisciplinary Activities of the Mathematical and Physical Sciences Directorate for their interdisciplinary collaboration aimed developing crystal design strategies for molecular metals. They will study ways to control the transition from the insulating state to the metallic state in organic systems. Because the superconducting critical temperature, Tc, is highest in metals containing light elements, (ie., the carbon and oxygen in fullerides and copper oxides) this study will focus on a number of distinctly different multi-dimensional organic metals. Important multi-dimensional crystal design parameters, such as packing efficiencies, local dipole-dipole interactions, hydrophobic-hydrophilic interactions, hydrogen bonding and coordination bonding, will be delineated. In these systems, which will include multidimensional pi coordinated molecular networks, pthalocyanines and inorganic clusters coupled to pi organics, effects of electronic structure on Tc- will be investigated, and connections made to the problem of hole and electron mobility in organic semiconductors. Collaborative Research in Chemistry (CRC) awards are given to interdisciplinary teams of scientists working on problems of broad chemical interest. The emphasis in these awards is on new collaborative modes of research and training.