A simple method to prepare highly ordered PS-b-P4VP block copolymer template

作者：Si Hua Yan^*; Chen Jing Sheng; Chow Gan Moog

来源：Colloids and Surfaces A: Physicochemical and Engineering Aspects , 2011, 373(1-3): 82-87.

DOI：10.1016/j.colsurfa.2010.10.034

• PS-b-P4VP
• Template
• 1
• 4-dioxane
• Chloroform
• FePt nanoparticles

A control strategy for tuning the film morphology of asymmetric polystyrene-b-poly(4-vinylpyridine) (PS-b-P4VP) block copolymers (BCPs) is reported. After preparation of the film by spin-coating method, the as-cast films were annealed in different solvent vapor. It is found that chloroform is a wonderful solvent for forming PS-b-P4VP regular pattern. Otherwise, with changing the concentration of PS-b-P4VP, cylindrical or parallel nanostructures could be attained. The PS-b-P4VP films with cylindrical structure are used as template to deposit FePt nanoparticles into the pores. Nanoparticles reaching the bottom of the holes form a disordered magnetic array.