Enhanced Hybridization and Nanopatterning via Heated Liquid-Phase Infiltration into Self-Assembled Block Copolymer Thin Films.
Enhanced Hybridization and Nanopatterning via Heated Liquid-Phase Infiltration into Self-Assembled Block Copolymer Thin Films.
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通过加热液相渗透到自组装嵌段共聚物薄膜中增强杂交和纳米图案化。
DOI：
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发表时间：
2019
影响因子：
9.5
通讯作者：
C. Nam
中科院分区：
文献类型：
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作者：
Ashwanth Subramanian;Nikhil Tiwale;G. Doerk;K. Kisslinger;C. Nam
通过在有机模板中应用无机材料的气相或液相渗透（VPI或LPI），可以容易地产生具有可调材料性质的有机-无机混合物，所得到的性质由渗透的无机物的类型和数量控制。虽然LPI提供了更多样化的可渗透元素选择，但它往往比VPI产生更小的渗透量，但解决该问题的尝试很少报道。在这里，我们展示了简易的温度增强的LPI方法来控制和急剧增加的量和动力学的Pt渗透到自组装聚苯乙烯-嵌段-聚（2-乙烯基吡啶）（PS-b-P2 VP）嵌段共聚物（BCP）薄膜。通过在适度升高的温度（40 - 80 °C）下应用LPI，我们展示了混合BCP膜的可控光学功能沿着导电三维（3D）无机纳米结构。结构分析揭示了在更高的LPI温度下增强的金属负载到BCP基质中，表明每个P2 VP单体的多个金属离子渗透。结合温度增强的LPI与分层多层BCP自组装，我们生成BCP-金属混合光学涂层，其具有可调的抗反射特性以及可扩展的导电3D Pt纳米网结构。通过温度增强的LPI增强的材料渗透和控制不仅能够实现有机-无机杂化纳米结构和性质的可调谐性，而且还扩展了BCP用于产生独特功能的无机纳米结构的应用。
Organic-inorganic hybrids featuring tunable material properties can be readily generated by applying vapor- or liquid-phase infiltration (VPI or LPI) of inorganic materials in organic templates, with resulting properties controlled by type and quantity of infiltrated inorganics. While LPI offers more diverse choices of infiltratable elements, it tends to yield smaller infiltration amount than VPI, but the attempt to address the issue has been rarely reported. Here, we demonstrate facile temperature-enhanced LPI method to control and drastically increase the quantity and kinetics of Pt infiltration into self-assembled polystyrene-block-poly(2-vinylpyridine) (PS-b-P2VP) block copolymer (BCP) thin films. By applying LPI at mildly elevated temperatures (40 - 80 °C), we showcase controllable optical functionality of hybrid BCP films along with conductive three-dimensional (3D) inorganic nanostructures. Structural analysis reveals enhanced metal loading into BCP matrix at higher LPI temperatures, suggesting multiple metal ion infiltration per monomer of P2VP. Combining temperature-enhanced LPI with hierarchical multilayer BCP self-assembly, we generate BCP-metal hybrid optical coatings featuring tunable antireflective properties as well as scalable conductive 3D Pt nanomesh structures. Enhanced material infiltration and control by temperature-enhanced LPI not only enables tunability of organic-inorganic hybrid nanostructure and properties but also expands the application of BCPs for generating uniquely functional inorganic nanostructures.
影响因子：
18.2
作者：
Jimenez-Angeles, Felipe;Kwon, Ha-Kyung;de la Cruz, Monica Olvera
通讯作者：
de la Cruz, Monica Olvera