THIN-FILM SUBSTRATES CONTAINING CROSS-LINKED CARBON NANOSTRUCTURES, AND RELATED METHODS Russian patent published in 2020 - IPC C01B32/168 C30B31/02 B82B3/00 B82Y30/00 G21G5/00 G01N21/65 

FIELD: chemistry.

SUBSTANCE: invention can be used in biochemical analysis using surface-enhanced Raman spectroscopy (SERS). First, a solution of carbon nanostructures is prepared. Suspension is then formed by reacting the obtained solution with a cross-linking agent containing a polyvalent cation source, such as a metal oxide or alkoxide, a complex of metals or a combination thereof. Cross-linked carbon nanostructures are separated from the suspension by filtration and placed on a carrier substrate. Functionalised carbon nanostructures, carbon nanotubes or graphene can be used. Cross-linking agent can contain nanoparticles of palladium, silver, gold, copper, platinum, ruthenium, rhodium, tin, aluminium, lithium, sodium, potassium or a combination thereof. Obtained thin-film substrate 2 comprises carrier substrate 6 and cross-linked carbon nanostructures 4 with a cross-linking agent there between. Said thin-film substrate with SERS-active analyte placed on it is subjected to Raman scattering, as a result of which SERS-active analyte is detected.

EFFECT: higher mechanical strength and durability of thin-film substrate, simplified method of its production due to elimination of complex equipment.

14 cl, 8 dwg, 19 ex