Development of Multi-Spin Conjugated Polymers with Large Magnetic Moment as a New Magneto-Responsible Organic Material

开发具有大磁矩的多自旋共轭聚合物作为新型磁响应有机材料

• 批准号: 12555268
• 负责人: NISHIDE Hiroyuki
• 金额: $ 7.68万
• 依托单位: Waseda University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (B)
• 财政年份: 2000
• 资助国家: 日本
• 起止时间: 2000 至 2001
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/en/grant/KAKENHI-PROJECT-12555268/
• 关键词: π-Conjugated Ploymer; High-spin Polymer; Magnetic Material; Magnetic Force Microscopy; Ferromagnetic Interaction; Polyphenylenevinylene; Magnetic Dot

π-Conjugated but non-Kekule-type polymers behave as a multi-spin organics with large molecular-based magnetic moment, and respond magnetically. The objective of this research is to characterize these multi-spin conjugated polymers as a magneto-responsible but purely organic material. Linear, star-shaped, and hyperbranched poly(4-phenoxyl- or - diphenylaminium-1,2-phenylenevinylene)s were synthesized. Atomic force and magnetic force microscopy were applied to monitor the molecular image and the weak magnetic image of these polymers. Magnetic response in the magnetic force microscopy exactly corresponded to spin density, size and shape of the polymer at a single-molecular level. It is concluded that magnetic force microscopy is an effective tool to detect a very weak magnetic signal of such multi-spin organic polymers and that the polymer molecule is a potentially new material of nanometer-sized and molecular-based magnetic dots.

π共轭但非kkkule型聚合物的表现为具有较大分子磁矩的多旋转有机物，并在磁性上做出响应。这项研究的目的是将这些多旋转共轭聚合物表征为磁势责任但纯粹有机材料。合成了线性，星形和超支的聚（4-苯氧基 - 或 - 二苯基升）-1,2-苯基乙烯基）。应用原子力和磁力显微镜来监测这些聚合物的分子图像和弱磁性图像。磁力显微镜中的磁反应完全对应于单分子水平的聚合物的旋转密度，大小和形状。得出的结论是，磁力显微镜是检测这种多旋照有机聚合物的非常弱的磁信号的有效工具，并且聚合物分子是纳米大小和基于分子的磁点的潜在新材料。

项目成果

Nishide et al.: "A Nanometer-Sized High-Spin Polyradical : Poly(4-phenoxyl-1,2-phenylenevinylene) Planarily Extended in a Non-Kekule Fashion and its Magnetic Force Microscopic Images"J.Am.Chem.Soc.. 123. 5942-5946 (2001)

Nishide 等人：“纳米级高自旋多自由基：以非凯库勒方式平面延伸的聚（4-苯氧基-1,2-亚苯基亚乙烯基）及其磁力显微图像”J.Am.Chem.Soc。

Nishide et al.: "Electrochemical and Ferromagnetic Couplings in 4,4',4''-(1,3,5-Benzenetriyl) tris (phenoxyl) Radical Formation"J.Org.Chem.. 66(印刷中). (2001)

Nishide 等人：“4,4,4-(1,3,5-苯三基)三(苯氧基)自由基形成中的电化学和铁磁耦合”J.Org.Chem.. 66（印刷中）。 ）

Nishide et al.: "Electrochemical and Ferromagnetic Couplings in 4,4′,4″-(1,3,5-Benzenetriyl)tris(phenoxyl) Radical Formation"J.Org.Chem.. 66. 1680-1685 (2001)

Nishide 等人：“4,4,4”-(1,3,5-Benzenetriyl)tris(phenoxyl) Radical Formation 中的电化学和铁磁耦合”J.Org.Chem.. 66. 1680-1685 (2001)

Nishide et al.: "Synthesis and Magnetic, Optoelectronic Properties of Poly(triphenylamine-alt-phenylenevinylene)s"J. Polym. Soc. Part A. Polym. Chem.. 38. 4119-4127 (2000)

Nishide 等人：“聚（三苯胺-交替亚苯基亚乙烯基）的合成及其磁、光电性质”J。

Nishide et al.: "Electrochemical and Ferromagnetic Couplings in 4,4',4"-(1,3,5-Benzenetriyl)tris(phenoxyl) Radical Formation"J. Org. Chem.. 66. 1680-1685 (2001)

Nishide 等人：“4,4,4”-(1,3,5-苯三基)三(苯氧基)自由基形成中的电化学和铁磁耦合”J. Org. Chem.. 66. 1680-1685 (2001)