Papers by Keyword: Electroabsorption

Abstract: The composition of silicate paint developed for rehabilitation of buildings and structures and including white Portland cement, binder based on sodium liquid glass and complex additive with nanodispersed additives does not require the use of traditional silication. Modifying the composition of coating with multi-walled carbon nanotubes has provided a coating with a shielding effect weakening high-frequency man-made electromagnetic radiation. Moreover, the use of carbon nanotubes has provided the increase of density of the coating structure, improved the physical and technical characteristics of cement and silica coating and ensured the durability of the repair coating 3,5 times compared to its analogues.

Abstract: 2, 6-Diaminoanthraquinone is used in drug delivery. The absorption and fluorescence spectral properties of 2,6-Diaminoanthraquinone (DAAQ) have been investigated in a series of organic solvents with different polarity functions ranging from 0.207 to 0.762.The different solvents used are Tetrahydrofuran (THF) (0.207), Dimethylformamide (DMF) (0.404), ethanol (0.654) and Methonal (0.762).The fluorescence shifts are more pronounced than the absorption shifts indicating that the change in dipole moment is positive. The change in dipole moment and the ratio of the dipole moments are determined and discussed by Solvatochromism method. The third order nonlinearity of 2,6-DAAQ in PVA dissolved in DMF solution is determined using Electroabsorption. Higher order nonlinearities can be deduced on successful recording of the stark spectrum at the higher order of the applied electric field.