Processable magnetic plastics composites - spin crossover of PMMA/Fe(II)-complexes composites

被引：33

作者：

Lee, SW

Lee, JW

Jeong, SH

Park, IW

Kim, YM

Jin, JI ^{[1
]}

机构：

[1] Korea Univ, Div Chem & Mol Engn, Seoul 136701, South Korea

[2] Korea Univ, Ctr Electro & Photo Respons Mol, Seoul 136701, South Korea

[3] Korea Univ, Korea Basic Sci Inst, Seoul Branch, Seoul 136701, South Korea

来源：

SYNTHETIC METALS | 2004年 / 142卷 / 1-3期

关键词：

spin crossover; Fe(II) complexes; PMMA composites; hysteresis loop; bistability;

D O I：

10.1016/j.synthmet.2003.09.011

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

We have prepared three new Fe(II) complexes containing 4-heptyl-1,2,4-triazole ligand and various counterions such as ClO4-, BF4- and Br-. The complexes were blended with poly(methyl methacrylate) (PMMA) and spin crossover behavior of the composites were studied by using a superconducting quantum interference device (SQUID) and differential scanning calorimetry (DSC). When the composites carried higher than 10 wt.% of the Fe(II) complexes, they revealed reversible, steep spin crossover for low spin H high spin transitions. All of them also exhibited hysteresis loops, some of which were unsymmetrical in shape. On heating, the transition temperature ranged from about -40 to 60 C depending on the composition. (C) 2003 Elsevier B.V. All rights reserved.

引用

页码：243 / 249

页数：7

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