Tailoring Photonic Crystals with Nanometer-Scale Precision Using Polyelectrolyte Multilayers

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• 作者：Andr&eacute ; C. Arsenault ; John Halfyard ; Zhuo Wang ; Vladimir Kitaev ; Geoffrey A. Ozin ; Ian Manners ; A. Mihi ; and H. Mí ; guez
• 刊名：Langmuir
• 出版年：2005
• 出版时间：January 18, 2005
• 年：2005
• 卷：21
• 期：2
• 页码：499 - 503
• 全文大小：142K
• 年卷期：v.21,no.2(January 18, 2005)
• ISSN：1520-5827

文摘

In this paper, we describe a rapid, accurate, and convenient method for postsynthetically tuning theoptical properties of colloidal photonic crystals. High quality photonic crystal films are first synthesizedand then coated iteratively with layers of water-soluble polyelectrolytes. The coating process results innanometer-scale shifts in the photonic stop band, a process which has been monitored by theoreticalmodeling. The results suggest a fundamentally different, reproducible layering mechanism inside theconfined spaces of the colloidal crystal where polyelectrolyte multilayers are less densely packed.