Patterning of hydrogen-bonded assembly film through ionization in vapor

详细信息    查看全文

• 作者：Shuguang Yang ; Yanfang Li ; Xiaofeng Li ; Yuefang Li ; Xiaoli Zhang ; Jian Xu
• 关键词：Layer-by-layer assembly ; Surface patterning ; Hydrogen bonding
• 刊名：Thin Solid Films
• 出版年：2009
• 出版时间：2 March 2009
• 年：2009
• 卷：517
• 期：9
• 页码：3024-3027
• 全文大小：666 K

文摘

The hydrogen-bonded films of poly(vinylpyrrolidone) (PVPON) and poly(acrylic acid) (PAA) were fabricated using layer-by-layer assembly technique. The films were incubated at three different vapor environments (acidic, neutral and basic). PAA would ionize in neutral or basic vapor environment, and then hydrogen bonds linking PVPON and PAA in the film would break and patterned topography would form gradually. Ionization degree of PAA in the film was characterized by Fourier transform infrared spectroscopy. Optical microscope and atomic force microscope were used to observe the film morphologies before and after incubation. Reflective spectroscopy and contact angle measurements were applied to further characterize the patterned surfaces.