Abstract: Composite films were prepared by the dip-coating method. An organosol of Au nanoparticles (6.3±0.4 nm) was used as the reaction mixture. The nanoparticles were stabilized with sodium bis(2-ethylhexyl) sulfosuccinate (AOT). The prepared films were formed of an AOT layer with encapsulated Au nanoparticles (i.e. Au@AOT films). The films demonstrated a stable plasmon effect. The variation of the immersion number of the glass substrate from 1 to 10 allowed the adjustment of the plasmonic properties. The absorption intensity and maximum wavelength of the surface plasmon resonance were found to change from 0.183 to 0.245 and from 529 ±2 to 539±2 nm, respectively. The plasmonic properties were found to correlate with the film thickness, roughness, and morphology. An increase in the concentration of Au nanoparticles improves the film’s mechanical strength and wettability.

Cite: Kolodin A.N. , Syrokvashin M.M. , Korotaev E.V.
Gold nanoparticle microemulsion films with tunable surface plasmon resonance signal
Colloids and Surfaces A: Physicochemical and Engineering Aspects. 2024. V.701. 134904 :1-11. DOI: 10.1016/j.colsurfa.2024.134904 WOS Scopus РИНЦ OpenAlex

Dates:

Published print:

Nov 20, 2024

Identifiers:

Web of science:	WOS:001283962700001
Scopus:	2-s2.0-85199779679
Elibrary:	73751910
OpenAlex:	W4400928111

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