Development of Multifunctional Photo-responsive Molecular Magnets

多功能光响应分子磁体的研制

• 批准号: 21K14582
• 负责人: ステファンチック オラフ
• 金额: $ 2.08万
• 依托单位: The University of Tokyo
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Early-Career Scientists
• 财政年份: 2021
• 资助国家: 日本
• 起止时间: 2021-04-01 至 2024-03-31
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/en/grant/KAKENHI-PROJECT-21K14582/
• 关键词: Functional compounds; Low-frequency absorption; Luminescence; Molecular magnets; Nonlinear optics; Photomagnets; Switchable materials; Advanced materials; Advance materials

In the second year of the project, 7 articles were published, and about 40 new transition metal complexes with different ligands were synthesized and characterized, with the most significant ones selected for further study on multifunctional photomagnetic materials. Among them, two new isostructural three-dimensional systems consisting of trinuclear triangle copper(II)-pyrazole and octacyanidometallates(IV) with strong antiferromagnetic interactions and spin frustration were synthesized, analyzed for their magnetic and optical properties, and described using theoretical calculations to improve the efficiency of the photomagnetic effect (Inorg. Chem. 2022, 61, 8930). Further studies on low-frequency THz absorption and Raman scattering (important for the development of fast wireless telecommunication), single-molecule magnet behavior (applicable in sophisticated high-density memory devices), and visible/near-infrared luminescence thermometric properties (used in bioimaging) in Ln(III)-(NCS/NCSe) and Ln(III)-[Au(SCN/CN)2] compounds for further implementation in photomagnetic systems have been studied (J. Mater. Chem. C 2023, 11, 1008; Adv. Opt. Mater. 2022, 10, 2201675; Int. J. Mol. Sci. 2022, 23, 6051). Due to the very promising results for lanthanide complexes, similar Fe(II)-[Hg(SCN)4] complexes were prepared and tested, obtaining paramagnetic materials exhibiting sub-terahertz absorption (Angew. Chem. Int. Ed. 2023, 62, e2022146) and non-linear optical effects observed in measurements of second harmonic generation and circular dichroism (Inorg. Chem. 2023, 62, 3278).

在项目的第二年，发表了7篇文章，合成了约40个不同配体的新的过渡金属配合物并进行了表征，其中最有意义的是选择了用于多功能光磁材料的进一步研究。其中，合成了两个具有较强反铁磁相互作用和自旋受挫的三核三角铜(II)-吡唑和八氰基金属(IV)等结构三维体系，分析了它们的磁学和光学性质，并用理论计算对其进行了描述，以提高光磁效应的效率(INORG)。化学。2022、61、8930)。在Ln(III)-(NCS/NCSE)和Ln(III)-[Au(SCN/CN)2]化合物中，进一步研究了Ln(III)-(NCS/NCSE)和Ln(III)-[Au(SCN/CN)2]化合物的低频THz吸收和拉曼散射(对快速无线通信的发展非常重要)、单分子磁特性(适用于复杂的高密度存储设备)和可见光/近红外发光测温特性(用于生物成像)。化学。C 2023，11,1008；高级选项马特。2022年、10年、2201675；Int.J.Mol.SCI。2022、23、6051)。由于稀土络合物的研究结果很有希望，类似的Fe(II)-[Hg(SCN)4]络合物也被制备和测试，得到了具有亚太赫兹吸收的顺磁性材料。化学。内部艾德2023，62，e2022146)以及在二次谐波产生和圆二向色性测量中观察到的非线性光学效应(Inorg.化学。2023、62、3278)。

项目成果

Magnetic Properties and Second Harmonic Generation of Noncentrosymmetric Cyanido-Bridged Ln(III)-W(V) Assemblies

非中心对称氰基桥Ln(III)-W(V)组件的磁性能和二次谐波产生

• DOI: 10.1021/acs.inorgchem.1c01113
• 发表时间: 2021
• 期刊: Inorganic Chemistry
• 影响因子: 4.6
• 作者: Kumar Kunal;Stefanczyk Olaf;Chilton Nicholas F.;Nakabayashi Koji;Imoto Kenta;Winpenny Richard E. P.;Ohkoshi Shin-ichi
• 通讯作者: Ohkoshi Shin-ichi

Experimental and theoretical insights into the photomagnetic effects in trinuclear and ionic Cu(II)-Mo(IV) systems

• DOI: 10.1039/d1qi01469b
• 发表时间: 2022-01-12
• 期刊: INORGANIC CHEMISTRY FRONTIERS
• 影响因子: 7
• 作者: Pai, TingYun;Stefanczyk, Olaf;Ohkoshi, Shin-Ichi
• 通讯作者: Ohkoshi, Shin-Ichi

Slow magnetic relaxation in Nd(<scp>iii</scp>) and Sm(<scp>iii</scp>) complexes formed in three-dimensional lanthanide-dicyanidometallate(<scp>i</scp>) frameworks exhibiting luminescent properties

在三维镧系元素-二氰基金属酸盐 (<scp>i</scp>) 骨架中形成的 Nd(<scp>iii</scp>) 和 Sm(<scp>iii</scp>) 配合物中的慢磁弛豫表现出发光特性

• DOI: 10.1039/d2tc04198g
• 发表时间: 2023
• 期刊: Journal of Materials Chemistry C
• 影响因子: 6.4
• 作者: Kumar Kunal;Li Guanping;Stefanczyk Olaf;Chorazy Szymon;Nakabayashi Koji;Ohkoshi Shin-ichi
• 通讯作者: Ohkoshi Shin-ichi

Ratiometric Raman and Luminescent Thermometers Constructed from Dysprosium Thiocyanidometallate Molecular Magnets

• DOI: 10.1002/adom.202201675
• 发表时间: 2022-09
• 期刊: Advanced Optical Materials
• 影响因子: 9
• 作者: Kunal Kumar;O. Stefańczyk;S. Chorazy;K. Nakabayashi;S. Ohkoshi

Desolvation-induced multistep spin-crossover in the [Fe(3-bpp)2](OTf)2 complex

[Fe(3-bpp)2](OTf)2 配合物中去溶剂化诱导的多步自旋交叉

• 发表时间: 2023
• 作者: Stefanczyk Olaf;Ohkoshi Shin-ichi
• 通讯作者: Ohkoshi Shin-ichi