Magnetic Multistability in an Anion Radical Pimer.
Magnetic Multistability in an Anion Radical Pimer.
复制标题
阴离子自由基二聚体的磁性多稳定性。
DOI：
10.1002/anie.202003927
复制
发表时间：
2020
影响因子：
--
通讯作者：
De‐Xian Wang
中科院分区：
文献类型：
--
作者：
De‐Hui Tuo;Chao Chen;Huapeng Ruan;Qi‐Qiang Wang;Y. Ao;Xinping Wang;De‐Xian Wang
Radical pimers are the simplest and most important models for studying charge transfer processes, and they provide deep insights into π-stacked organic materials. Notably, radical pimer systems with magnetic bi- or multistability may have important applications in switchable materials, thermal sensors and information storage media. However, no such systems have been reported. Here, we describe a new pimer consisting of neutral N -(n-propyl) benzene triimide ([BTI-3C]) and its anionic radical ([BTI-3C] -• ), which exhibits rare magnetic multistability. The crystalline pimer was easily synthesized by reduction of BTI-3C with cobaltocene (CoCp 2 ). The transition occurs with a 27 K-width thermal hysteresis loop in the range of 170-220 K, accompanied by a smaller 25 K-width loop at 220-242 K. The magnetic multistabilty was attributed to the slippage of the π-stacked BTI backbones and the entropy-driven conformational isomerization of the side propyl chains in the crystalline state during temperature variation. Our research demonstrated an unprecedented radical pimer showing magnetic multistability. The high diversity of the substituents on BTI provides great possibilities for designing multifunctional materials.
影响因子：
16.6
作者：
Schmidt, David;Bialas, David;Wuerthner, Frank
通讯作者：
Wuerthner, Frank