Lim Sung K, Yoon C S, Kim C K, Kim Young-Ho
Department of Materials Science and Engineering, Hanyang University, Seoul 133-791, South Korea.
J Colloid Interface Sci. 2005 Jul 15;287(2):501-6. doi: 10.1016/j.jcis.2004.06.084.
Nanoparticles with different morphology and composition were fabricated inside a polyimide (PI) matrix based on selectively oxidizing a layer of Fe(100-x)Pt(x) alloy metal film sandwiched between two PI precursor layers. Gamma-Fe2O3, Pt, and Fe3Pt nanoparticles were formed in a monolayer between two PI layers, depending on the alloy film composition and curing conditions. These particles were well-crystallized and sized between 4 and 10 nm. X-ray photoelectron spectroscopy confirmed that Fe in the film preferentially reacted with the organic matrix whereas Pt remained metallic throughout the curing process, which enabled fabrication of particles different morphology and composition. This process can be easily extended to other alloy films, which provides an opportunity to fabricate nanoparticles relatively easily with desired composition and morphology embedded in an inert organic matrix.
基于对夹在两个聚酰亚胺（PI）前驱体层之间的一层Fe(100-x)Pt(x)合金金属膜进行选择性氧化，在聚酰亚胺（PI）基质中制备了具有不同形态和组成的纳米颗粒。根据合金膜的组成和固化条件，在两个PI层之间的单层中形成了γ-Fe2O3、Pt和Fe3Pt纳米颗粒。这些颗粒结晶良好，尺寸在4到10纳米之间。X射线光电子能谱证实，膜中的Fe优先与有机基质反应，而Pt在整个固化过程中保持金属状态，这使得能够制备具有不同形态和组成的颗粒。该过程可以很容易地扩展到其他合金膜，这为相对容易地制备嵌入惰性有机基质中的具有所需组成和形态的纳米颗粒提供了机会。
