联吡啶桥联聚倍半硅氧烷及其镍(Ⅱ)、铽(Ⅲ)配合物的合成与磁性能

高等学校化学学报 ›› 2011, Vol. 32 ›› Issue (8): 1744.

联吡啶桥联聚倍半硅氧烷及其镍(Ⅱ)、铽(Ⅲ)配合物的合成与磁性能

吴连斌, 吕志卿, 陈遒, 陈利民, 蒋剑雄

杭州师范大学有机硅化学及材料技术教育部重点实验室, 杭州 310012

收稿日期:2010-11-01 修回日期:2011-01-30 出版日期:2011-08-10 发布日期:2011-07-19
通讯作者: 蒋剑雄 E-mail:fgeorge@163.com
基金资助:
杭州师范大学中青年培养基金(批准号: 2010QN12)资助.

Synthesis and Magnetic Properties of Novel Nickel(Ⅱ) and Terbium(Ⅲ)-Dipyridyl Coordination Bridged Polysilsesquioxane

WU Lian-Bin, LÜ Zhi-Qing, CHEN Qiu, CHEN Li-Min, JIANG Jian-Xiong*

Key Laboratory of Organosilicon Chemistry and Material Technology of Education Ministry, Hangzhou Normal University, Hangzhou 310012, China

Received:2010-11-01 Revised:2011-01-30 Online:2011-08-10 Published:2011-07-19
Contact: JIANG Jian-Xiong E-mail:fgeorge@163.com
Supported by:
杭州师范大学中青年培养基金(批准号: 2010QN12)资助.

摘要/Abstract

摘要： 本文首次合成了一种新型含联吡啶基桥联倍半硅氧烷前驱体，并且通过溶胶-凝胶工艺，在稀盐酸催化下，分别与镍盐(醋酸镍)或铽盐(氯化铽)反应，制备了联吡啶基桥联聚倍半硅氧烷及其金属配合物。对聚合物及其配合物进行了紫外、红外和元素分析等结构表征。结果表明金属离子与配体成功络合。扫描电镜照片显示，它们为粒径均一、形状规则的球状粒子。磁性能研究表明，在低温区，两者都具有铁磁性，其中镍（Ⅱ）配合物具有较大的矫顽力、剩余磁化强度以及磁滞回线面积，表现出硬铁磁性，而铽（Ⅲ）配合物具有很小的矫顽力、剩余磁化强度以及磁滞回线面积，表现出软铁磁性。

关键词: 联吡啶, 桥联聚倍半硅氧烷, 金属配位聚合物, 磁性能

Abstract: A novel bipyridine-bridged polysilsesquioxane was synthesized and its metal-coordination polymers were prepared by sol-gel technology from bipyridine-bridged silsesquioxane and the nickle salt (Nickel acetate) or terbium salt (Terbium chloride) under the catalysis of diluted hydrochloric acid. The structures of polymer and metal-coordination polymer were verified with infrared ray spectrometry, ultraviolet spectrometry and elemental analysis. Meanwhile, the scanning electron microscope (SEM) results suggested that the homogeneous and spherical particles were formed. Finally, The magnetic properties of the two coordinated polymers were tested. The results show that both exhibited ferromagnetism in low temperature. Ni2+-coordination polymer was a hard-ferromagnet due to its large values of coercive force, remanent magnetization and area of magnetic hysteresis loop. However, Tb3+-coordination polymer was a soft-ferromagnet ascribed to its small values of coercive force, remanent magnetization and area of magnetic hysteresis loop.

Key words: Bipyridine, Bridged polysilsesquioxane, Metal-coordination polymer, Magnetic property

TrendMD:

吴连斌, 吕志卿, 陈遒, 陈利民, 蒋剑雄. 联吡啶桥联聚倍半硅氧烷及其镍(Ⅱ)、铽(Ⅲ)配合物的合成与磁性能. 高等学校化学学报, 2011, 32(8): 1744.

WU Lian-Bin, Lü Zhi-Qing, CHEN Qiu, CHEN Li-Min, JIANG Jian-Xiong*. Synthesis and Magnetic Properties of Novel Nickel(Ⅱ) and Terbium(Ⅲ)-Dipyridyl Coordination Bridged Polysilsesquioxane. Chem. J. Chinese Universities, 2011, 32(8): 1744.

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