Development of porous magnets with electron donor/acceptor metal–organic frameworks

具有电子供体/受体金属的多孔磁体的开发

• 批准号: 17J02497
• 负责人: 張 俊
• 金额: $ 1.6万
• 依托单位: Tohoku University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for JSPS Fellows
• 财政年份: 2017
• 资助国家: 日本
• 起止时间: 2017-04-26 至 2020-03-31
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-17J02497/
• 关键词: Molecular Magnet; Gas Sorption; Electronic State; magnetic sponge; hydrogen bonding; electron transfer; host-guest interaction; theoretical calculation; Curie temperature (Tc); electronic state

Nowadays, the control of spontaneous magnetization in the molecular magnets has been mainly actualized by photo-irradiation, solvent accommodation, or electrochemical approach. Here, we demonstrate for the first time CO2 can be adsorbed to generate the long-range magnetic order in an electronic-state-flexible layered compound, [{Ru2(2,4-F2PhCO2)4}2TCNQ(OEt)2] (1). The adsorption of CO2 into compound 1 is accompanied by a structural transformation with the bending deflection of TCNQ(OEt)2, which plays an extremely important role in controlling the electronic states. Owing to the reversible change of electronic states by the CO2 adsorption/desorption processes, magnetic phase is switched between antiferromagnetic phase (CO2-adsorbed phase) and paramagnetic phase (CO2-free phase).

目前，分子磁体自发磁化的控制主要通过光照射、溶剂调节或电化学方法来实现。在这里，我们首次证明 CO2 可以被吸附以在电子态灵活的层状化合物 [{Ru2(2,4-F2PhCO2)4}2TCNQ(OEt)2] (1) 中产生长程磁序。 CO2吸附到化合物1中伴随着TCNQ(OEt)2弯曲偏转的结构转变，这在控制电子态方面起着极其重要的作用。由于CO2吸附/解吸过程中电子态的可逆变化，磁相在反铁磁相（CO2吸附相）和顺磁相（无CO2相）之间切换。

项目成果

Magnetic Sponge Behavior via Electronic State Modulations in a Redox-Active [Ru2]2TCNQ Coordination Framework

氧化还原活性 [Ru2]2TCNQ 协调框架中电子态调节的磁性海绵行为

• 发表时间: 2018
• 作者: Jun Zhang;Wataru Kosaka;and Hitoshi Miyasaka;Jun Zhang
• 通讯作者: Jun Zhang

Magnetic Sponge Behavior via Intrinsic Spin Modulations in Charge-Transferred Porous Magnets

电荷转移多孔磁体中本征自旋调制的磁性海绵行为

• 发表时间: 2018
• 作者: Jun Zhang;Wataru Kosaka;Yoshihiro Sekine;Kouji Taniguchi;and Hitoshi Miyasaka;Jun Zhang
• 通讯作者: Jun Zhang

Regulation of Inter-layer Interaction in a 2D Layered Magnet via Paramagnetic O2 Adsorption

通过顺磁性 O2 吸附调节二维层状磁体中的层间相互作用

• 发表时间: 2018
• 作者: Jun Zhang;Wataru Kosaka;and Hitoshi Miyasaka
• 通讯作者: and Hitoshi Miyasaka

Host-guest interaction-driven control of magnetic phase transition temperature in a Donor/Acceptor Metal-Organic Framework

供体/受体金属有机框架中主客体相互作用驱动的磁相变温度控制

• 发表时间: 2018
• 作者: Jun Zhang;Wataru Kosaka;Yoshihiro Sekine;Kouji Taniguchi;Hitoshi Miyasaka
• 通讯作者: Hitoshi Miyasaka