Zhang Xuan, Xie Haomiao, Ballesteros-Rivas Maria, Woods Toby J, Dunbar Kim R
Department of Chemistry, Texas A&M University, P.O. Box 30012, College Station, TX, 77842-3012, USA.
Chemistry. 2017 Jun 1;23(31):7448-7452. doi: 10.1002/chem.201701590. Epub 2017 May 10.
Bifunctional electrically conducting single-molecule magnets are highly promising platforms for non-volatile memory devices and quantum computing applications. The development of these molecular materials, however, has largely been hindered by the lack of straightforward synthetic methods. Herein a facile and modular approach is demonstrated for the realization of bifunctional materials that does not require electrochemical or chemical oxidation to obtain partially charged organic radicals. Magnetic and electrical conductivity studies reveal that the Dy compound exhibits slow relaxation of the magnetization between 5.0-8.0 K and semiconducting behavior over the range 180-350 K. DC magnetic fields have been found to suppress the quantum tunneling of the magnetization and affect the spin-canted antiferromagnetic interactions.
双功能导电单分子磁体是用于非易失性存储设备和量子计算应用的极具前景的平台。然而，这些分子材料的发展在很大程度上受到缺乏直接合成方法的阻碍。本文展示了一种简便且模块化的方法来实现双功能材料，该方法无需电化学或化学氧化即可获得部分带电的有机自由基。磁性和电导率研究表明，Dy化合物在5.0 - 8.0 K之间表现出磁化强度的缓慢弛豫，在180 - 350 K范围内表现出半导体行为。已发现直流磁场可抑制磁化强度的量子隧穿并影响自旋倾斜反铁磁相互作用。
