2019, №1

сс. 47-66

Laser Formation of Nanoparticles and Plasmon Structures in Porous Materials Using SCF-Technologies

2019, №1

сс. 47-66

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A.O. Rybaltovskii, V.G. Arakcheev, N.V. Minaev, V.I. Yusupov, S.I. Tsypina

Key words: supercritical fluid, nanoparticles, polymers, porous glasses, structures, selfassembly, carbon dioxide, laser formation

It was presented the review of our research on the processes of metal nanoparticles
formation (silver and gold), as well as various types of structures of them in polymeric
and porous materials, which are based on the effects of self-assembly and selforganization
in the field of continuous laser radiation. Most of the experiments were
carried out either on samples impregnated with metal precursors in a supercritical
carbon dioxide (SC-CO2) medium or at the time they were in that medium. Various
types of metal nanoparticles structures in polymers and porous glasses were synthesized:
periodic structures of micron and submillimeter scales, layered structures of nanoparticles
with an unusually small period (about 90 nm), filamentous, ring structures
and islet films of nanoparticles. Some regularities and mechanisms of formation of
nanoparticles and their structures depending on the wavelength of laser radiation are
established. In addition, new original results are presented on the method of obtaining
of composite porous foam-like materials based on silver nanoparticles and polymer
matrices, which combines laser-induced «drawing» of porous structures, their
impregnation by precursor molecules using SCF technologies and subsequent recovery
of nanoparticles.

doi:10.1134/S1990793119070273