Abstract
The features of improving self-assembled films based on different-sized gold particles were investigated in this work. A study of the SERS signal was carried out to compare SPF samples consisting of gold nanoparticles of different sizes. For this purpose, colloids with different particle sizes were synthesized. These are spherical particles 20 nm and 40 nm in diameter and lamellar particles with an approximate size of 60x40x15 nm. Optimization of the concentration of the self-assembly agent of the reaction mixture in the preparation of the self-assembled plasmon film (SPF) has been carried out. The concentration of the self-collecting agent in the organic phase, at which the maximum values of the SERS enhancement of the signal were observed, is 10−5 M. The showing the reproducibility of the SERS signal for samples with the maximum enhancing of the SERS signal value is close for the all the studied particle sizes consisted SPF.
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