Rider David A, Liu Kun, Eloi Jean-Charles, Vanderark Lawrence, Yang Ling, Wang Jia-Yu, Grozea Dan, Lu Zheng-Hong, Russell Thomas P, Manners Ian
Department of Chemistry, University of Toronto, Toronto M5S 3H6, Canada.
ACS Nano. 2008 Feb;2(2):263-70. doi: 10.1021/nn7002629.
The pyrolysis of cylinder-forming samples of the diblock copolymer polystyrene-block-poly(ferrocenylethylmethylsilane) (PS-b-PFEMS) in bulk and in thin films has confirmed that these materials are useful for the generation of semi-ordered arrays of C/SiC ceramics containing Fe nanoparticles which are derived from the organometallic domains. In many cases, the ceramic mass yields were predictable and produced ceramics bearing a monomodal distribution of iron nanoparticles due to the nanoscaled structure of the preceramic PFEMS domains. The pyrolysis of thin films stabilized by cross-linking the PS domains with UV light demonstrated high areal yields, improved shape retention, and the presence of cylinder-centered magnetic nanoparticles.
对二嵌段共聚物聚苯乙烯-嵌-聚（二茂铁基乙基甲基硅烷）（PS-b-PFEMS）的圆柱状成型样品进行本体和薄膜热解，证实了这些材料可用于生成包含源自有机金属域的铁纳米颗粒的C/SiC陶瓷半有序阵列。在许多情况下，陶瓷质量产率是可预测的，并且由于陶瓷前驱体PFEMS域的纳米级结构，生成的陶瓷中铁纳米颗粒具有单峰分布。通过用紫外光交联PS域来稳定薄膜的热解表现出高的面积产率、改善的形状保持性以及圆柱中心磁性纳米颗粒的存在。
