Magneto-structural defects on a congested nanoscopic polyradical dendrimer
Magneto-structural defects on a congested nanoscopic polyradical dendrimer
复制标题
拥挤的纳米级多自由基树枝状聚合物上的磁结构缺陷
DOI：
10.1016/j.jpcs.2003.11.010
复制
发表时间：
2004
影响因子：
4
通讯作者：
J. Veciana
中科院分区：
文献类型：
--
作者：
D. Ruíz;J. Vidal;N. Ventosa;J. Campo;F. Palacio;C. Rovira;J. Veciana
合成了新的多氯三苯甲基四氢根1，并对其磁性进行了研究。这种树枝状自由基中存在的大量过度拥挤不仅影响其合成，而且影响其磁性。尽管空间位阻是增加高自旋物质的持久性的极其有效的工具，但它可能导致不期望的空间位阻，这不利于Meta连接的自由基单元之间的期望的铁磁耦合。
The new polychlorotriphenylmethyl tetraradical 1 has been obtained and its magnetic properties studied. The large overcrowding present in this dendritic radical has been shown not only to affect its synthesis but its magnetic properties. Even though steric hindrance is an extremely efficient tool to increase the persistence of high-spin species, it may lead to undesired steric congestions that disfavor the desired ferromagnetic coupling between meta connected radical units.