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首页> 外文期刊>The journal of physical chemistry, B. Condensed matter, materials, surfaces, interfaces & biophysical >Polyelectrolyte-Coated Nanosphere Lithographic Patterning of Surfaces: Fabrication and Characterization of Electropolymerized Thin Polyaniline Honeycomb Films
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Polyelectrolyte-Coated Nanosphere Lithographic Patterning of Surfaces: Fabrication and Characterization of Electropolymerized Thin Polyaniline Honeycomb Films

机译：表面的聚电解质涂层纳米球平版印刷图案：电聚合聚苯胺蜂窝状薄膜的制备和表征

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摘要

Well-ordered 2-D polyaniline (PAni) honeycomb films were produced by electropolymerization of aniline within the interstitial voids in assemblies of polystyrene (PS) nanospheres precoated with poly(diallyldimeth-ylammonium chloride) and poly(sodium 4-styrenesulfonate) (PDADMAC/PSS) thin shells, followed by the extraction of the PS cores with toluene. Depositing polyelectrolyte (PE) layers onto the PS particles was found to greatly improve the uniformity of the PAni attachment onto the PS particle surface. Through a systematic variation of the PE layer number and the electropolymerization parameters, PAni honeycomb films with desirable pore sizes, pore wall widths, and film thicknesses can be fabricated. Atomic force microscopy (AFM) and scanning electron microscopy were used to study the surface features of the resulting PAni honeycomb films, whereas electrochemical quartz crystal microbalance (EQCM) and reflectance FTIR measurements were carried out to verify the redox states of the PAni films and the composite nature of the pore walls. Assemblies constituting PS particles coated with four alternating PDADMAC and PSS layers yielded densely deposited PAni honeycomb films with evenly distributed pores. The PE shells within the pores of the honeycomb structure were found not to affect the overall properties of the PAni honeycomb films (e.g., conductivity, redox properties, and ion mobility within the films). Interestingly, the presence of PE/PAni composites at the pore walls appears to enhance the rigidity of the PAni film, as the extent of pore shrinkage was observed to be smaller with films produced with the template of PS particles precoated with a four or six PE layers. PE-coated nanosphere lithography followed by electropolymerization provides a unique method for constructing honeycomb films with patterns that are tunable and pores that are modifiable.
机译：通过在预先涂有聚二烯丙基二甲基氯化铵和聚4-苯乙烯磺酸钠（PDADMAC /）的聚苯乙烯（PS）纳米球组件的间隙中进行苯胺的电聚合，可以生产出有序的二维聚苯胺（PAni）蜂窝状薄膜。 PSS）薄壳，然后用甲苯萃取PS核。发现将聚电解质（PE）层沉积到PS颗粒上可以大大提高PAni附着在PS颗粒表面上的均匀性。通过PE层数和电聚合参数的系统变化，可以制造出具有所需孔径，孔壁宽度和膜厚的PAni蜂窝膜。原子力显微镜（AFM）和扫描电子显微镜用于研究所得PAni蜂窝膜的表面特征，而电化学石英晶体微天平（EQCM）和反射FTIR测量用于验证PAni膜和膜的氧化还原状态。孔壁的复合性质。组成用四个交替的PDADMAC和PSS层涂覆的PS颗粒的组件，产生了具有均匀分布的孔的致密沉积的PAni蜂窝膜。发现在蜂窝结构的孔内的PE壳不影响PAni蜂窝膜的整体性能（例如，膜内的电导率，氧化还原性能和离子迁移率）。有趣的是，在孔壁处存在PE / PAni复合物似乎可以增强PAni膜的刚性，因为观察到的孔隙收缩程度较小，而在预涂有4或6种PE的PS颗粒模板下生产的膜层。 PE涂层的纳米球光刻技术随后进行电聚合，为构建蜂窝膜提供了独特的方法，该蜂窝膜具有可调节的图案和可修饰的孔。

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