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Aggregation induced polyelectrolyte multilayer film containing cubic silsesquioxane nanoparticles

机译:包含立方倍半硅氧烷纳米粒子的聚集诱导聚电解质多层膜

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摘要

Polyelectrolyte multilayer (PEM) films offer a method to functionalize substrates with specific properties that enable the films to be used for a variety of purposes. Desirable qualities of PEM films can include mechanical strengths, ease of preparations, flexibility, and their abilities to have their properties tailored to suit a particular process. We present a simple method to fabricate a class of PEM films that incorporate cubic silsesquioxane nanoparticles (CSSQ). Through a spin self-assembly (SSA) process, a hybrid multilayered film with two-components, namely, poly(styrene sulfonate) (PSS) and octaammonium cubic silsesquioxane (CSSQ) nanoparticle have been fabricated. The formation of this multilayer film is further verified by ellipsometry, contact angle studies, and atomic force microscopy (AFM). The water contact angle and ellipsometric measurements exhibit that the (PSS/OA-CSSQ) films are deposited onto the substrate. The surface topography of the deposited bilayers of PSS/OA-CSSQ film appears to be uniformly distributed with extremely small granules but the film uniformity of the granular surface is diminished and clusters of granules are observed at above 5 bilayers due to the aggregation of the OA-CSSQ nanoparticles.
机译:聚电解质多层(PEM)膜提供了一种功能化具有特定特性的基材的方法,该特性使该膜可用于多种用途。 PEM膜的理想质量可以包括机械强度,易于制备,柔韧性以及根据特定工艺定制其性能的能力。我们提出了一种简单的方法来制造一类包含立方硅倍半氧烷纳米粒子(CSSQ)的PEM膜。通过自旋自组装(SSA)工艺,已经制备了具有两种组分的杂化多层膜,即聚(苯乙烯磺酸盐)(PSS)和八铵倍半硅氧烷(CSSQ)纳米颗粒。该多层膜的形成通过椭圆光度法,接触角研究和原子力显微镜(AFM)进一步证实。水接触角和椭偏测量结果表明(PSS / OA-CSSQ)薄膜沉积在基材上。沉积的PSS / OA-CSSQ双层薄膜的表面形貌似乎均匀地分布着极小的颗粒,但是由于OA的聚集,颗粒表面的薄膜均匀性降低了,并且在5个以上的双层上观察到了颗粒簇-CSSQ纳米粒子。

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