Electrowetting-Induced Morphological Evolution of Metal-Organic Inverse Opals toward a Water-Lithography Approach

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• 作者：Junchao Liu ; Lun Wan ; Manbo Zhang ; Kejian Jiang ; Kai Song ; Jingxia Wang ; Tomiki Ikeda and Lei Jiang
• 刊名：Advanced Functional Materials
• 出版年：2017
• 出版时间：February 17, 2017
• 年：2017
• 卷：27
• 期：7
• 全文大小：2701K
• ISSN：1616-3028

文摘

This paper presents a unique morphological evolution of metal-organic inverse opals (Pb(NO₃)₂-poly(St-MMA-AA)) subjected to an electrowetting process. The morphology of the building blocks changes from interconnected pores to separated hollow spheres during the electrowetting process, accompanied by an unusual blue-shift of the stopband position and the decreased wettability of the film. This morphology evolution is attributed to the simultaneous collapse/reconstruction of the metal-organic frame owing to the partial dissolution of the metal salt and the interfacial assembly of the metal-organic coordination around the skeleton. The adjustable morphology can be developed as a novel and simple water-lithography approach for the creation of the photonic crystal pattern.