Solution Processable Iridescent Self-Assembled Nanoplatelets with Finely Tunable Interlayer Distances Using Charge- and Sterically Stabilizing Oligomeric Polyoxyalkyleneamine Surfactants
Solution Processable Iridescent Self-Assembled Nanoplatelets with Finely Tunable Interlayer Distances Using Charge- and Sterically Stabilizing Oligomeric Polyoxyalkyleneamine Surfactants
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DOI：
10.1021/cm402991c
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发表时间：
2014-02-25
影响因子：
8.6
通讯作者：
Sue, Hung-Jue
中科院分区：
文献类型：
--
作者：
Wong, Minhao;Ishige, Ryohei;Sue, Hung-Jue
可在有机溶剂中加工的光子结构对于器件组件的大规模制造至关重要。为了提供传统光刻方法的可行替代方案，需要溶液可加工的光子结构来证明在制造过程中对关键器件尺寸的精细控制。光子结构通常需要仅在水溶液中有效的长程静电力。在这里，我们报告了一种新的策略，使用低聚聚氧化烯胺表面活性剂，以制备电荷和空间稳定的纳米片，可以自组装成层状相在非水溶液中的精细可调的大层间距离，可以超过100 nm。在可见光谱中的可调谐颜色的辉煌彩虹色被证明。纳米片显示出规避从各向同性相到柱状相的典型相变行为，并且在phi < 0.01的浓度下转变为近晶相。
Photonic structures that are processable in organic solvents are critical to large-scale fabrication of device components. To provide a viable alternative to traditional lithographic methods, solution processable photonic structures are required to demonstrate fine control over critical device dimensions in the fabrication process. Photonic structures typically require long-range electrostatic forces that are effective only in aqueous solutions. Here we report a novel strategy of using oligomeric polyoxyalkyleneamine surfactants to prepare charge- and sterically stabilized nanoplatelets that can self-assemble into lamellar phases in nonaqueous solutions with finely tunable large interlamellar distances that can exceed 100 nm. Brilliant iridescence in the visible spectrum with tunable colors is demonstrated. The nanoplatelets are shown to circumvent the typical phase transition behavior from isotropic to nematic to columnar phase and transitioned into smectic phase at concentrations of phi < 0.01.