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Polysilsesquioxanes Containing Superparamagnetic Nanoclusters of Cobalt or Nickel
Theoretical and Experimental Chemistry ( IF 1 ) Pub Date : 2019-06-01 , DOI: 10.1007/s11237-019-09603-8
V. V. Shevchenko , M. A. Gumenna , V. N. Bliznyuk , N. S. Klimenko , A. V. Stryutsky , J. Wang , C. Binek

A method was developed for the synthesis of ion-coordinated polysilsesquioxanes (OSS-M) by reaction of amphiphilic carboxyl-containing oligosilsesquioxanes (OSS-COOH) with Co and Ni acetates. The OSS-M contain two types of crystalline phases, one of which is formed as a result of interaction of the alkyl chains while the other results from the formation of hydrogen bonds and coordination bonds. The size of the clusters formed by the metal ions, estimated from measurements of their magnetic moments, amounts to 2-3 nm. The magnetic nanoclusters formed by the Co ions in thin polymer films are anisotropic with respect to the plane of the substrate while the Ni ions are isotropic.

中文翻译:

含有钴或镍超顺磁性纳米团簇的聚倍半硅氧烷

开发了一种通过两亲性含羧基低聚倍半硅氧烷 (OSS-COOH) 与醋酸钴和镍反应合成离子配位聚倍半硅氧烷 (OSS-M) 的方法。OSS-M 包含两种类型的结晶相,一种是烷基链相互作用的结果,另一种是氢键和配位键的形成。由金属离子形成的簇的大小,根据它们的磁矩测量估计,总计为 2-3 nm。由聚合物薄膜中的 Co 离子形成的磁性纳米团簇相对于基板的平面是各向异性的,而 Ni 离子是各向同性的。
更新日期:2019-06-01
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