Magnetic ultrathin film and patterning

作者：Zhao N^*; Lu CH; Cao WX

来源：Acta Polymerica Sinica, 2004, (3): 458-461.

• Fe(3)O(4) nanoparticle
• diazoresin
• magnetic ultrathin film
• patterning

Magnetic ultrathin films were fabricated layer-by-layer using a self-assembly method through the electrostatic interaction between the photosensitive diazoresin (DR) and the negatively charged Fe(3)O(4) nanoparticles (NP-Fe(3)O(4)). The results of the UV-vis spectra and AFM show that the assembly of DR and NP-Fe(3)O(4) is very successful. After UV irradiation, the ionic bonds of the DR/NP-Fe(3)O(4) film convert to covalent ones and the magnetic films become very stable toward polar solvents. The magnetic film images with good resolution are obtained by means of selective UV-exposure of the film under a photo-mask and then developing the exposed film in the saturated aqueous solution of sodium dodecyl sulfate (SDS) and cetyl trimethyl ammonium bromide (CTAB), respectively.

• 出版日期2004-6
• 单位北京大学