Sorption of dyes bases polymers with molecular imprints

Abstract

This work is devoted to study of the sorption properties of polymers with molecular imprints bases
dyes and their polymers comparison. Polymers with molecular imprints triarylmethane dyes on the basis of
polyimides (the original monomers - 1,2,4,5-sensortechnology acid and 4,4’-diaminodiphenyloxide) obtained
by non-covalent imprinting. The square projections of the molecules on the surface of the modified polymer
for all colors exceed the calculated area values of the molecules, which indicates a leaky filling in the surface
of the sorbent and the likely orientation of the molecules close to parallel to the surface of the sorbent. In
sorption of anionic particles of colorants to the surface of the adsorbent acquires a partial negative charge,
which complicates the sorption with increasing surface concentration of sorbate. Orientation of dye molecules
in the adsorption layer are probably close to parallel to the surface of the sorbent. For synthetic dyes
obtained high values of the imprinting factor, which allows the use of polymers with molecular imprints of
the dye as a modifier of piezoelectric sensors for selective determination bases of the dyes in liquid media.