Magneto-opto-electronic bistability in a phenalenyl-based neutral radical
Magneto-opto-electronic bistability in a phenalenyl-based neutral radical
复制标题
DOI：
10.1126/science.1071372
复制
发表时间：
2002-05-24
期刊：
影响因子：
56.9
通讯作者：
Haddon, RC
中科院分区：
文献类型：
--
作者：
Itkis, ME;Chi, X;Haddon, RC
一种基于螺联苯烯基中性自由基的新型有机分子导体，同时在电、光和磁三个物理通道中表现出双稳定性。在顺磁性状态下，不成对的电子位于二聚体的外部苯酚单元中，而在抗磁性状态下，电子迁移到内部苯酚单元和自旋对作为π二聚体。出乎意料的是，在反磁性状态下电导率增加了两个数量级，并且带隙减小。这种类型的多功能材料有潜力用作新型电子设备的基础，其中多个物理通道用于写入、读取和传输信息。
A new organic molecular conductor, based on a spiro-biphenalenyl neutral radical, simultaneously exhibits bistability in three physical channels: electrical, optical, and magnetic. In the paramagnetic state, the unpaired electrons are located in the exterior phenalenyl units of the dimer, whereas in the diamagnetic state the electrons migrate to the interior phenalenyl units and spin pair as a pi-dimer. Against all expectations, the conductivity increases by two orders of magnitude in the diamagnetic state, and the band gap decreases. This type of multifunctional material has the potential to be used as the basis for new types of electronic devices, where multiple physical channels are used for writing, reading, and transferring information.