Kinetics of the formation and structure of oligoperoxide nanolayers and grafted polymer brushes on glass plate surface

Abstract

Abstract:Functional oligoperoxide surfactants and coordinating oligoperoxide metal complexes were studied as modifiers of glass flat plates to provide the localization of radical forming sites and other functional fragments in adsorbed polymeric layers of a nanoscale thickness. Both the kinetics of the coating formation and properties of the nanolayers witness the dependence of the packing density of oligoperoxide molecules in the coatings on the oligoperoxide natures, concentrations and conditions of the sorption modification. The availability of definite amount of peroxide groups in formed nanolayer provides the possibility of controlled radical graft polymerization initiated from modified surface leading to reliable surface protection, functionality and targeted surface hydrophilic-hydrophobic properties. PACS (2008):78.66.Qn, 07.60.Fs

Ellipsometric Ex-Situ study of fluorescent oligoperoxide nanolayers with europium complexes adsorbed on a glass surface. Formation and structureThe matrix model of vortex-beam quadrefringence in a uniaxial crystal

“…The thickness and optical parameters of the polymer nanolayers adsorbed were obtained experimentally for different concentrations of the OP-Eu solutions, using ellipsometric measurements described in our earlier work [6]. We employed a so-called ex situ ellipsometric technique.…”

“…The bulk refractive indices of the polymer material have been obtained using the refractometric technique and assuming that the refractive index of the solution (n s ) depends linearly on the polymer concentration [6]. The bulk refractive index thus measured for the OP-Eu polymer material is equal to n pol = 1.51.…”

“…The adsorption parameter can be calculated from experimental ellipsometric data on the basis of equation [6] …”

“…In our earlier work [6], we have suggested a method for deposition of polymer layers by means of their adsorption from the water solution. This facilitates successive studies for kinetics of the adsorption using an ex situ ellipsometry.…”

“…Moreover, the technique provides also important information on the structure of those surface layers (roughness, volume fraction of deposited material in the case of its heterogeneous structure, porosity, etc. [6][7][8]). …”