Langmuir (L) and Langmuir–Blodgett (LB) films of 3,4,9,10-tetra(heptyloxycarbonyl)perylene its binary mixtures with 4-octyl-4′-cyanobiphenyl (8CB) 4-pentyl-4″-cyano-p-terphenyl (5CT) have been studied. On the basis surface pressure–mean molecular area isotherms L films, alignment molecules on air–water interface has estimated. The were transferred onto quartz plates at pressures below collapse point. absorption fluorescence spectra LB obtained using unpolarized linearly polarized light,...

The Langmuir films of two liquid crystal materials, 4-octyl-4'-cyanobiphenyl (8CB) and 4-pentyl-4"-cyano-p-terphenyl (5CT), their mixtures have been studied by recording surface pressure-area isotherms Brewster angle microscopy (BAM) images. pure crystals revealed very different characters the indicating organization molecules molecular interactions in monolayer at water-air interface. formed from 8CB/5CT give evidence for phase separation components over whole range molar fractions. Similar...

Abstract Langmuir-Blodgett (LB) films formed of some discotic liquid crystals, namely 3,4,9,10-tetra-(n-alkoxy-carbonyl)-perylenes, mixed with arachid acid have been studied. The absorption and fluorescence spectra were recorded. results obtained led to conclusions about formation self-aggregates dye molecules both in ground excited states at the air-solid substrate interface. It was found that fraction J-aggregates can be created state. In state, mostly excimers appear number this kind...

Langmuir films of binary mixtures the following liquid crystal materials: 4-octyl-4′-cyanobiphenyl (8CB) or 4-pentyl-4″-cyano-p-terphenyl (5CT) with 4-(trans-4'-octylcyclohexyl)isothiocyanatobenzene (8CHBT), trans-4-octyl(4′-cyanophenyl)cyclohexane (8PCH) 4-octyl4′-isothiocyanatobiphenyl (8BT) were investigated. Surface pressure-mean molecular area isotherms recorded at various mixture compositions. It was found that only materials for which molecules have a terminal -CN group are able to...

The synthesis of perylene monoimide dye and the ability Langmuir Langmuir–Blodgett (LB) films formation are reported. perylene-like – n-butyl diester N-(n-octyl)imide perylene-3,4,9,10-tetracarboxylic acid arachidic (AA) or thermotropic liquid crystal 4-octyl-4'-cyanobiphenyl (8CB) were used to compose mixtures different mole fraction. electronic absorption emission spectra in diluted chloroform solution, a 10 μm thick sandwich cell, monomolecular film on water surface (in situ) after...

Abstract Langmuir and Langmuir-Blodgett (LB) films of a perylene-like compound its binary mixtures with 4-octyl-4'-cyanobiphenyl (8CB) 4-pentyl-4"-cyano-p-terphenyl (5CT) have been studied. On the basis surface pressure-area isotherms, molecular organization on air-water interface has estimated. Information about miscibility or phase separation components in obtained. The spectroscopic study LB allowed conclusions to be drawn arrangement molecules quartz slides. fluorescence spectra revealed...

Langmuir films formed of some fluorescent dyes, 3,4-bis-pentyl ester 9,10-N-(n-pentylimide)-perylenetetracarboxylic acid, as well their mixtures with arachidic were studied. Surface pressure versus mean molecular area isotherms for reordered and the alignment molecules at air–water interface was estimated. The show that dye do not lie flat onto water surface but are tilted respect to normal interface. pressure–area from dye/arachidic acid mixture provide evidence phase separation components...

Phospholipid membranes are ubiquitous components of cells involved in physiological processes; thus, knowledge regarding their interactions with other molecules, including tocopherol ester derivatives, is great importance. The surface pressure-area isotherms pure α-tocopherol (Toc) and its derivatives (oxalate (OT), malonate (MT), succinate (ST), carbo analog (CT)) were studied Langmuir monolayers order to evaluate phase formation, compressibility, packing, ordering. compressibility results...

Langmuir-Blodgett (LB) films formed of some discotic liquid crystals, namely 3,4,9,10-tetra-(<i>n</i>-alkoxy-carbonyl)- perylenes, have been studied. The absorption and fluorescence spectra were recorded. results obtained led to conclusions about formation dimers both in ground excited states at the air-solid substrate interface. Moreover, information molecular arrangement LB has obtained.

Langmuir and Langmuir-Blodgett films of various dyes, namely derivatives of: 3,4,9,10-perylenetetracarboxylic acid, 3,4,9-perylenetricarboxylic naphthalenebicarboxylic acid naphthoylenebenzimidazole as well their mixtures with a liquid crystal were investigated. The dependence the surface pressure -- on mean molecular area for was measured, from which organization miscibility components in monomolecular layer at air-water interface determined. For absorption emission spectra recorded...

Langmuir (L) and Langmuir-Blodgett (LB) films of perylene-like dye its binary mixtures with 4-octyl-4'-cyanobiphenyl (8CB) 4-pentyl-4"-cyano-<i>p</i>-terphenyl (5CT) have been investigated. On the basis surface pressure-mean molecular area isotherms, organization on air-water interface has determined. The spectroscopic study LB allowed conclusions to be drawn about alignment molecules quartz slides. absorption fluorescence spectra revealed formation self-aggregates.