Synthesis and monolayer spreading behaviour of surface-active compounds containing electron- and hole-transporting groups. 1. Fluorenylidene derivatives

1989 ◽  
Vol 67 (12) ◽  
pp. 2136-2141 ◽  
Author(s):  
J. W. Taylor ◽  
C. P. Sloan ◽  
D. A. Holden ◽  
G. J. Kovacs ◽  
R. O. Loutfy
Keyword(s):  
Hydrocarbon Chain ◽  
Cross Sectional ◽  
Langmuir Blodgett ◽  
Air Water Interface ◽  
Hole Transporting ◽  
Langmuir Blodgett Films ◽  
Surface Active ◽  
New Compounds ◽  
Surface Active Compounds ◽  
Polyester Film

Surface-active derivatives containing fluorenylidene groups were synthesized, with the goal of creating thin-film devices incorporating monolayers of electron-transporting materials. The new compounds were studied in monolayers at the air–water interface, and were further characterized by cyclic voltammetry. The spreading behaviour of long-chain esters of a fluorenylidene malononitrile carboxylic acid was relatively insensitive to the cross-sectional area of the hydrocarbon chain, but was more strongly affected by changes in the polarity of the hydrophilic groups. Conditions for Langmuir–Blodgett deposition of multilayers of two of the new compounds on titanium-coated polyester film were also explored. Keywords: monolayers, Langmuir–Blodgett films, fluorene, surfactants.

Synthesis and monolayer spreading behaviour of surface-active compounds containing electron- and hole-transporting groups. 2. Carbazole derivatives

1989 ◽  
Vol 67 (12) ◽  
pp. 2142-2147 ◽  
Author(s):  
J. W. Taylor ◽  
C. P. Sloan ◽  
D. A. Holden ◽  
G. J. Kovacs ◽  
R. O. Loutfy
Keyword(s):  
Cross Sections ◽  
Fluorescence Decay ◽  
Langmuir Blodgett ◽  
Carbazole Derivatives ◽  
Hole Transporting ◽  
Langmuir Blodgett Films ◽  
Axis Parallel ◽  
Surface Active ◽  
Surface Active Compounds

The synthesis of several new surface-active carbazole derivatives is described. These compounds are intended to have applications as hole-transporting materials in thin-film devices assembled by the Langmuir–Blodgett technique. All of the carbazole-containing surfactants gave stable monolayers at the air–water interface with cross sections of 0.35–0.42 nm2/molecule, characteristic of the carbazole ring system oriented perpendicular to the surface with its long axis parallel to the surface. Conditions for Langmuir–Blodgett deposition of multilayers on titanium-coated polyester film were explored. Further characterization of the carbazole derivatives by cyclic voltammetry and fluorescence decay measurements is also described. Keywords: monolayers, Langmuir–Blodgett films, carbazole, surfactants.

Chlorophyll a–violaxanthin interactions in monolayers at air–water interface and in Langmuir–Blodgett films

2000 ◽  
Vol 19 (2) ◽  
pp. 117-125 ◽  
Author(s):  
Wieslaw I Gruszecki ◽  
Bogumil Zelent ◽  
Heidar-Ali Tajmir-Riahi ◽  
Gongming Wang ◽  
Toufik Taleb ◽  
...  
Keyword(s):  
Chlorophyll A ◽  
Water Interface ◽  
Langmuir Blodgett ◽  
Air Water Interface ◽  
Langmuir Blodgett Films

Supermonomolecular structure in the Langmuir-Blodgett films of a surface-active dye-fatty acid mixed system

1985 ◽  
Vol 107 (18) ◽  
pp. 5270-5271 ◽  
Author(s):  
Yasujiro Kawabata ◽  
Tatsuo Sekiguchi ◽  
Motoo Tanaka ◽  
Takayoshi Nakamura ◽  
Hideo Komizu ◽  
...  
Keyword(s):  
Fatty Acid ◽  
Mixed System ◽  
Langmuir Blodgett ◽  
Langmuir Blodgett Films ◽  
Surface Active

Studies of Orientational Order in Monolayers of Nonlinear Optical Dye Molecules

1987 ◽  
Vol 109 ◽  
Author(s):  
J. D. Legrange ◽  
L. A. King ◽  
M. G. Kuzyk ◽  
K. D. Singer ◽  
H. E. Katz ◽  
...  
Keyword(s):  
Azo Dye ◽  
Second Harmonic ◽  
Orientational Order ◽  
Linear Absorption ◽  
Langmuir Blodgett ◽  
Solid Substrates ◽  
Air Water Interface ◽  
Material Forming ◽  
New Compounds ◽  
Absorption Measurements

ABSTRACTWe present results of studies of orientational order of Langmuir-Blodgett monolayer and multilayer films based on second harmonic generation and linear absorption measurements. Two new compounds, a tricyanovinyl aniline and a tricyanovinyl azo dye, both possessing large second order molecular susceptibilities have been synthesized and transferred as monolayers from the air-water interface to solid substrates using the Langmuir-Blodgett technique. The azo dye is a superior Langmuir-Blodgett material, forming films which are chemically and structurally stable. Multilayers of this compound show an enhancement in polar orientational order with thickness, as observed in the dependence of the second harmonic polarization components on number of layers.

Sign in / Sign up

Export Citation Format

Share Document