DNA-templated assembly of organic molecule-based magnets

基于有机分子的磁体的 DNA 模板组装

• 批准号: 19350072
• 负责人: SHIOMI Daisuke
• 金额: $ 8.82万
• 依托单位: Osaka City University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (B)
• 财政年份: 2007
• 资助国家: 日本
• 起止时间: 2007 至 2009
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-19350072/
• 关键词: 電気; 磁気的性質; 磁性; 超分子化学; 分子性固体; ラジカル; フェリ磁性; 核酸塩基; シトシン; グアニン

As a novel supramolecular approach to rationalized construction of organic molecule-based magnets, we have proposed "bio-inspired molecule-based approach", in which the complementary hydrogen bonding between nucleobases are introduced to stable radical molecules with various spin quantum numbers for the control of the molecular arrangement. We have succeeded in synthesizing the first example of a Watson-Crick type cytosine-guanine hydrogen-bonded complex composed of cytosine- and guanine-substituted nitroxide radical molecules, which have been characterized by single-crystal X-ray crystallography. As another approach to construct a molecular spin assembly, we have proposed and designed molecular spin assembly templated by single-stranded oligonucleotides. A minimal model system for the assembly containing a covalent base vacancy has been designed, in which nucleobase-substituted radicals should be confined in the base-specific manner.

作为一种新的超分子方法来合理化的有机分子基磁体的建设，我们已经提出了“生物启发分子为基础的方法”，其中核碱基之间的互补氢键被引入到稳定的自由基分子与不同的自旋量子数的控制的分子排列。我们已经成功地合成了第一个例子的沃森-克里克型胞嘧啶鸟嘌呤氢键复合物组成的胞嘧啶和鸟嘌呤取代的氮氧自由基分子，其特征在于通过单晶X射线晶体学。作为构建分子自旋组装体的另一种方法，我们提出并设计了以单链寡核苷酸为模板的分子自旋组装体。设计了一个含共价碱基空位的组装体的最小模型系统，在该系统中，碱基取代的自由基应该以碱基特异性的方式被限制。

项目成果

Preparation and Magnetic Properties of 4,6-Bis (imino itroxide)-Substituted Resorcinol and its Cu-Comlex

4,6-双(亚氨基氧化)取代间苯二酚及其铜络合物的制备及磁性

• 发表时间: 2007
• 期刊: Polyhedron 26
• 作者: Y. Makita;N. Kihara;T. Takata;Y. Nakanishi;Tadahisa Iwata;Y. Nakanishi;K.Tanaka
• 通讯作者: K.Tanaka

Preparation, structure, and magnetic interaction of a Mn(hfac)2-bridged [2-(3-pyridyl)(nitronyl nitroxide)-Mn(hfac)2]2 chain complex.

• DOI: 10.1039/b618682c
• 发表时间: 2007-06
• 期刊: Chemical communications
• 影响因子: 4.9
• 作者: K. Okada;Shiori Beppu;Koichiro Tanaka;Masato Kuratsu;K. Furuichi;M. Kozaki;Shuichi Suzuki;D. Shiomi;Kazunobu Sato;T. Takui;Y. Kitagawa;K. Yamaguchi

Curved aromaticity of a corannulene-based neutral radical: Crystal structure and 3D unbalanced delocalization of spin

• DOI: 10.1002/anie.200704752
• 发表时间: 2008-01-01
• 期刊: ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
• 影响因子: 16.6
• 作者: Morita, Yasushi;Ueda, Akira;Nakasuji, Kazuhiro
• 通讯作者: Nakasuji, Kazuhiro

Diaminotriazine-Substituted Nitronyl Nitroxide : A Novel Building Block for Organic Magnets Possessing Multiple Hydrogen Bonding Substituents as Structure-Determining Supramolecular Synthons

二氨基三嗪取代的硝基氮氧化物：具有多个氢键取代基作为结构决定性超分子合成物的有机磁体的新型构建模块

• 发表时间: 2010
• 期刊: CrystEngComm 12
• 作者: H. Tanaka;D. Shiomi;S. Suzuki;M. Kozaki;K. Okada;K. Sato;T. Takui;Y.Kitagawa;新倉謙一;H.Tanaka
• 通讯作者: H.Tanaka

Ab initio Calculations of Spin-Orbit Contribution to the Zero-Field Splitting Tensors of npi* Excited States by the CASSCF Method with MRMP2 Energy Correction

利用带有 MRMP2 能量校正的 CASSCF 方法从头计算自旋轨道对 npi* 激发态零场分裂张量的贡献

• 发表时间: 2009
• 期刊: Chem. Phy. Lett 477
• 作者: K. Sugisaki;K. Toyota;K. Sato;D. Shiomi;M. Kitagawa;T. Takui
• 通讯作者: T. Takui