Influence of the Molecular Structure on the Lateral Distribution of Xanthene Dyes in Langmuir−Blodgett Films

Langmuir ◽  
1999 ◽  
Vol 15 (24) ◽  
pp. 8465-8473 ◽  
Author(s):  
Dimitri Pevenage ◽  
Mark Van der Auweraer ◽  
Frans C. De Schryver
Keyword(s):  
Molecular Structure ◽  
Lateral Distribution ◽  
Xanthene Dyes ◽  
Langmuir Blodgett ◽  
Langmuir Blodgett Films

Synthesis of a Substituted Phthalocyaninato-polysiloxane and its Langmuir-Blodgett Films

1998 ◽  
Vol 02 (06) ◽  
pp. 527-530 ◽  
Author(s):  
Y. J. LI ◽  
Y. FAN ◽  
X. G. REN ◽  
L. G. ZHANG ◽  
D. P. JIANG ◽  
...  
Keyword(s):  
Molecular Structure ◽  
Elemental Analysis ◽  
Detection Sensitivity ◽  
Langmuir Blodgett ◽  
Langmuir Blodgett Films

Tetrakis-4-(2,4-di-tert-amylphenoxy)phthalocyaninato-polysiloxane was synthesized. Its molecular structure was confirmed by elemental analysis, IR and UV-vis spectra. The gas-sensitive properties of its Langmuir–Blodgett films exposed to NH 3, I 2 and NO 2 in air were measured. The results showed that the detection sensitivity on exposure to NH3 in air can reach 0.1 ppm, while it can reach 100 ppm on exposure to NO 2 and I 2 in air.

Photosensitized electron injection from xanthene dyes incorporated in Langmuir-Blodgett films into tin dioxide electrodes

1991 ◽  
Vol 95 (9) ◽  
pp. 3771-3779 ◽  
Author(s):  
G. Biesmans ◽  
M. Van der Auweraer ◽  
C. Cathry ◽  
D. Meerschaut ◽  
F. C. De Schryver ◽  
...  
Keyword(s):  
Tin Dioxide ◽  
Electron Injection ◽  
Xanthene Dyes ◽  
Langmuir Blodgett ◽  
Langmuir Blodgett Films

Molecular organization and aggregation in Langmuir and Langmuir-Blodgett films of azo dye/liquid crystal mixtures

2009 ◽  
Vol 17 (2) ◽  
Author(s):  
K. Inglot ◽  
T. Martyński ◽  
D. Bauman
Keyword(s):  
Molecular Structure ◽  
Liquid Crystal ◽  
Azo Dye ◽  
Electronic Absorption Spectra ◽  
Terminal Group ◽  
Solid Substrate ◽  
Langmuir Films ◽  
Molecular Organization ◽  
Langmuir Blodgett ◽  
Langmuir Blodgett Films

AbstractA study of azo dye/liquid crystal mixtures in monolayers formed at air-water (Langmuir films) and air-solid substrate (Langmuir-Blodgett films) interfaces was performed. Three azo dyes with various molecular structure and two liquid crystal materials: 4-octyl-4′-cyanobiphenyl (8CB) and trans-4-octyl(4′-cyanophenyl)-cyclohexane (8PCH) were used. The morphology of Langmuir films was monitored by means of a Brewster angle microscope (BAM). Moreover, a surface pressure and electronic absorption spectra of the monolayer spread on the water surface of dye/liquid crystal mixtures as a function of a mean molecular area were simultaneously recorded. In addition, the absorption for Langmuir-Blodgett films deposited on quartz plates was measured. Information about intermolecular interactions in the mixtures of the nonamphiphilic dye and the liquid crystal with polar terminal group was obtained. Conclusions about the formation of self-aggregates between dye molecules have been drawn. The influence of the dye molecular structure and its concentration on aggregates’ geometry was found.

Polymeric Langmuir-Blodgett films containing xanthene dyes

2008 ◽  
Vol 81 (4) ◽  
pp. 696-703 ◽  
Author(s):  
O. N. Bezkrovnaya ◽  
N. O. Mchedlov-Petrosyan ◽  
N. A. Vodolazkaya ◽  
V. I. Alekseeva ◽  
L. P. Savvina ◽  
...  
Keyword(s):  
Xanthene Dyes ◽  
Langmuir Blodgett ◽  
Langmuir Blodgett Films
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