| 金属有机框架材料对[Fe(HB(pz)3)2]自旋转换行为的影响 |
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| 引用本文： | 赵田,Ishtvan Boldog,Christoph Janiak,刘跃军.金属有机框架材料对[Fe(HB(pz)3)2]自旋转换行为的影响[J].无机化学学报,2017,33(8):1330-1338. |
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| 作者姓名： | 赵田 Ishtvan Boldog Christoph Janiak 刘跃军 |
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| 作者单位： | 湖南工业大学包装与材料工程学院, 先进包装材料与技术湖南省重点实验室, 株洲 412007,德国杜塞尔多夫大学无机化学与结构化学研究所, 杜塞尔多夫 D-40225,德国杜塞尔多夫大学无机化学与结构化学研究所, 杜塞尔多夫 D-40225,湖南工业大学包装与材料工程学院, 先进包装材料与技术湖南省重点实验室, 株洲 412007 |
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| 基金项目： | 国家自然科学基金（No.11372108）和德国联邦教育与研究部（No.03SF0492C）资助项目。 |
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| 摘 要： | 通过在介孔结构金属有机框架材料MIL-101（Cr）和MIL-100（Al）的孔洞中合成自旋交叉化合物Fe（HB（pz）3）2]的方法，可以得到SCO@MOF复合物。通过红外光谱（FTIR）、粉末X射线衍射（PXRD）、原子吸收光谱（AAS）以及气体吸附-脱附等进行了进一步测试。通过变温磁测量对复合材料的温度诱导自旋转换行为的研究表明，复合材料的自旋转换行为发生改变甚至是消失了。复合材料的这一现象可以解释为Fe（HB（pz）3）2]在MOF主体材料的孔洞中形成了一种新的结晶相，且孔壁压力将会阻碍Fe（HB（pz）3）2]从低自旋态向高自旋态转变。不同SCO@MOF复合物得到了相似的自旋转换行为结果。这确认了当自旋交叉化合物在金属有机框架材料孔洞中形成时，MOFs材料的限制压力或基体效应对其自旋转换行为的影响显然是至关重要的。
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| 关 键 词： | 自选交叉化合物 [Fe(HB(pz)3)2] 金属有机框架材料 基体效应 |
| 收稿时间： | 2017/4/13 0:00:00 |
| 修稿时间： | 2017/6/27 0:00:00 |
Effect of Metal-Organic Frameworks on the Spin-Transition Behavior of [Fe(HB(pz)3)2] |
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| ZHAO Tian,Ishtvan Boldog,Christoph Janiak and LIU Yue-Jun.Effect of Metal-Organic Frameworks on the Spin-Transition Behavior of [Fe(HB(pz)3)2][J].Chinese Journal of Inorganic Chemistry,2017,33(8):1330-1338. |
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| Authors: | ZHAO Tian Ishtvan Boldog Christoph Janiak and LIU Yue-Jun |
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| Institution: | Key Laboratory of Advanced Packaging Materials and Technology of Hunan Province, School of Packaging and Materials Engineering, Hunan University of Technology, Zhuzhou, Hunan 412007, China,Institute of Inorganic Chemistry and Structural Chemistry, University Düsseldorf, Universitätsstr. 1 40225 Düsseldorf, Germany,Institute of Inorganic Chemistry and Structural Chemistry, University Düsseldorf, Universitätsstr. 1 40225 Düsseldorf, Germany and Key Laboratory of Advanced Packaging Materials and Technology of Hunan Province, School of Packaging and Materials Engineering, Hunan University of Technology, Zhuzhou, Hunan 412007, China |
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| Abstract: | The spin-crossover (SCO) compoundFe(HB(pz)3)2] was synthesized in the pores of mesostructured metal-organic frameworks MIL-101(Cr) and MIL-100(Al) to yield SCO@MOF composites as evidenced by infrared spectrometry (FTIR), powder X-ray diffractometry (PXRD), atomic absorption (AAS) and gas adsorption-desorption studies. Studies of the temperature-induced spin crossover behavior of the composites by temperature-variable magnetic measurements of the composites indicate that the spin transitions of the composites are changed (TZ-SP-1) or disappeared (TZ-SP-2). The effect for SCO@MOF composites may be explained with formation of new crystalline phase ofFe(HB(pz)3)2] in the pores of MOF host materials and the pore wall pressure of MOFs prevent the transition ofFe(HB(pz)3)2] from low-spin state to high-spin state. The similar SCO behaviour ofFe(HB(pz)3)2] for different SCO@MOF composites confirms that the confinement pressure or matrix effect on the spin transition is apparently crucial when the SCO compound is formed in the pores of metal-organic frameworks. |
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| Keywords: | spin-crossover compound [Fe(HB(pz)3)2] metal-organic frameworks matrix effect |
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