文献类型：期刊文献

英文题名：Reversible light-driven magnetic switching of salen cobalt complex

作者：Wan, Song[1,2];Li, Mengqi[1,2];Zhang, Zhipeng[1,2];Xi, Hancheng[1,2];Yang, Hong[1,2];Luo, Qianfu[1,2];Zhu, Wei-Hong[1,2]

机构：[1]East China Univ Sci & Technol, Shanghai Key Lab Funct Mat Chem, Frontiers Sci Ctr Mat & Dynam Chem, Key Lab Adv Mat,Sch Chem & Mol Engn,Feringa Nobel, Shanghai 200237, Peoples R China;[2]East China Univ Sci & Technol, Frontiers Sci Ctr Mat & Dynam Chem, Joint Int Res Lab Precis Chem & Mol Engn, Inst Fine Chem,Sch Chem & Mol Engn,Feringa NobelE, Shanghai 200237, Peoples R China

年份：2020

卷号：63

期号：9

起止页码：1191

外文期刊名：SCIENCE CHINA-CHEMISTRY

收录：;EI(收录号：20203008976340);WOS:【SCI-EXPANDED(收录号:WOS:000551397000004)】；

基金：This work was supported by the National Natural Science Foundation of China for the Science Center Program (21788102), the Creative Research Groups (21421004) and Key Project (21636002), the National Natural Science Foundation of China (21905091), the Shanghai Municipal Science and Technology Major Project (Grant 2018SHZDZX03), the Innovation Program of Shanghai Municipal Education Commission, Scientific Committee of Shanghai (15XD1501400), the Program of Introducing Talents of Discipline to Universities (B16017), the Shanghai Pujiang Program (18PJ1402200) and China Postdoctoral Science Foundation (2019M651418).

语种：英文

外文关键词：photochromism; diarylethene; salen complex; spin-crossover; magnetic switch

摘要：Spin-crossover (SCO) metal complexes are expected to be widely used in data storage materials, display devices and sensors. Although a lot of spin-crossover photoswitches have been developed, the reversible photomodulation cases that work at room temperature are limited. Herein, a novel cobalt complexo-1-Co(II) wherein the salen unit bridges with bis-diarylethene has been designed as switch to construct "off-on" logic operation at room temperature. The complexo-1-Co(II) displays an abrupt, reversible and hysteretic spin crossover (T-1/2 down arrow=166 K,T-1/2 up arrow=177 K, and Delta T-1/2=11 K) between the high-spin (HS) and low-spin (LS) states. Meanwhile, photocyclization ofo-1-Co(II) with UV light produces a photoresponsive closed formc-1-Co(II), which always stays at low-spin without SCO at all. Moreover, the magnetic switching of the complex can also be achieved with redox reactions between Co(II) and Co(III).