{"title":"Optically Active Films Based on AOT-Stabilized Silver Organosol","authors":"V. V. Bocharov, V. S. Sulyaeva, A. N. Kolodin","doi":"10.1134/S1061933X25600149","DOIUrl":null,"url":null,"abstract":"<p>Composite films based on silver organosols stabilized with an anionic surfactant (AOT, sodium bis(2-ethylhexyl)sulfosuccinate) have been formed on polystyrene substrates by the dip-coating method. The process of film formation has been shown to be accompanied by the appearance of silver aggregates with interparticle distances exceeding the particle diameters. At the same time the aggregation has no effect on the optical properties of the nanoparticles. The obtained films exhibit plasmon absorption signal and the absence of plasmonic delocalization. Variations in the the number of substrate immersions in the sol makes it possible to affect the intensity of the plasmon absorption signal and the functional properties of the resulting coatings, such as their morphology, roughness (from 9 ± 2 to 25 ± 4 nm), thickness (from 585 ± 13 to 831 ± 28 nm), and the wettability of the surface by water (from 36 ± 6 to 53 ± 9°).</p>","PeriodicalId":521,"journal":{"name":"Colloid Journal","volume":"87 3","pages":"327 - 339"},"PeriodicalIF":1.1000,"publicationDate":"2025-05-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Colloid Journal","FirstCategoryId":"92","ListUrlMain":"https://link.springer.com/article/10.1134/S1061933X25600149","RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q4","JCRName":"CHEMISTRY, PHYSICAL","Score":null,"Total":0}
引用次数: 0
Abstract
Composite films based on silver organosols stabilized with an anionic surfactant (AOT, sodium bis(2-ethylhexyl)sulfosuccinate) have been formed on polystyrene substrates by the dip-coating method. The process of film formation has been shown to be accompanied by the appearance of silver aggregates with interparticle distances exceeding the particle diameters. At the same time the aggregation has no effect on the optical properties of the nanoparticles. The obtained films exhibit plasmon absorption signal and the absence of plasmonic delocalization. Variations in the the number of substrate immersions in the sol makes it possible to affect the intensity of the plasmon absorption signal and the functional properties of the resulting coatings, such as their morphology, roughness (from 9 ± 2 to 25 ± 4 nm), thickness (from 585 ± 13 to 831 ± 28 nm), and the wettability of the surface by water (from 36 ± 6 to 53 ± 9°).
期刊介绍：
Colloid Journal (Kolloidnyi Zhurnal) is the only journal in Russia that publishes the results of research in the area of chemical science dealing with the disperse state of matter and surface phenomena in disperse systems. The journal covers experimental and theoretical works on a great variety of colloid and surface phenomena: the structure and properties of interfaces; adsorption phenomena and structure of adsorption layers of surfactants; capillary phenomena; wetting films; wetting and spreading; and detergency. The formation of colloid systems, their molecular-kinetic and optical properties, surface forces, interaction of colloidal particles, stabilization, and criteria of stability loss of different disperse systems (lyosols and aerosols, suspensions, emulsions, foams, and micellar systems) are also topics of the journal. Colloid Journal also includes the phenomena of electro- and diffusiophoresis, electro- and thermoosmosis, and capillary and reverse osmosis, i.e., phenomena dealing with the existence of diffusion layers of molecules and ions in the vicinity of the interface.
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