Silver emulsion films with isotropic mechanical properties and hydrophilic porous surface

IF 2 4区材料科学 Q3 MATERIALS SCIENCE, COATINGS & FILMS

Thin Solid Films Pub Date : 2025-04-20 DOI:10.1016/j.tsf.2025.140685

V.V. Bocharov , V.S. Sulyaeva , M.M. Syrokvashin , A.N. Kolodin

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引用次数: 0

Abstract

Optically active films based on Ag nanoparticles stabilised by sodium bis(2-ethylhexyl)sulfosuccinate (AOT) were prepared by the dip-coating method. It was experimentally found that variation of the substrate immersion number allowed one to control the surface properties of the prepared films. The values of the surface roughness, the pore depth, the contact angle, and the adhesion work vary within a wide range from 1.1 ± 0.5 to 20.9 ± 1.7 nm, 25±6 to 37±7 nm, 37±4 to 18±5°, and 2.5 ± 0.1 to 32±1 J∙m^-2, respectively. A comprehensive study using X-ray energy dispersive analysis, X-ray photoelectron spectroscopy, and UV–Vis spectroscopy showed that the prepared films exhibited a complex chemical composition. The films are formed by the silver nanoparticles encapsulated in the AOT layer. The numerical concentration and the linear size of the encapsulated nanoparticles grow with an increase of the substrate immersion number. Due to the presence of hydrophilic properties as well as a stable plasmonic effect, the obtained films can be considered as a promising material for the development of surface plasmon resonance sensor devices with liquid contact.

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具有各向同性力学性能和亲水多孔表面的银乳液膜

采用浸涂法制备了以双（2-乙基己基）琥珀酸磺基钠（AOT）为稳定剂的银纳米粒子光学活性薄膜。实验发现，改变衬底浸没次数可以控制所制备薄膜的表面性能。表面粗糙度、孔隙深度、接触角和粘附功的变化范围分别为1.1±0.5 ~ 20.9±1.7 nm、25±6 ~ 37±7 nm、37±4 ~ 18±5°和2.5±0.1 ~ 32±1 J∙m-2。利用x射线能量色散分析、x射线光电子能谱和紫外可见光谱综合研究表明，制备的薄膜具有复杂的化学成分。薄膜是由包裹在AOT层中的银纳米颗粒形成的。随着衬底浸没次数的增加，纳米颗粒的数值浓度和线尺寸均增大。由于该薄膜具有亲水性和稳定的等离子体效应，可被认为是开发具有液体接触的表面等离子体共振传感器器件的有前途的材料。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Thin Solid Films 工程技术-材料科学：膜

CiteScore

4.00

自引率

4.80%

发文量

381

审稿时长

7.5 months

期刊介绍： Thin Solid Films is an international journal which serves scientists and engineers working in the fields of thin-film synthesis, characterization, and applications. The field of thin films, which can be defined as the confluence of materials science, surface science, and applied physics, has become an identifiable unified discipline of scientific endeavor.