Formation of porphyrin derivatives monolayers using Langmuir-Blodgett technique
N. N. Begletsova1,2, V. N. Mironyuk1,2, A. I. Smirnova3, N. V. Usol’tseva3, E. G. Glukhovskoy1,2
1 Department of Nano- and Biomedical Technologies, Saratov State University, Saratov, 410012, Russia
2 Education and Research Institute of Nanostructures and Biosystems, Saratov State University, Saratov, 410012, Russia
3 Nanomaterials Research Institute, Ivanovo State University, Ivanovo, 153025, Russia
Abstract
Currently, many new substances suitable for the Langmuir-Blodgett method are being synthesized. Among them are derivatives of porphyrin. One of these new derivatives was obtained at the Ivanovo State University. Porphyrin used in photosensitive devices for various purposes, including photovoltaic devices. Molecule of the porphyrin derivative has a large polar part, the area of which is much larger than the total area of the four non-polar substituents. So these molecules of this substance are poorly oriented on the water surface. Using a mixture of a fatty acid and a porphyrin derivative can solve this problem. Analysis of our research showed the dependence of miscibility on the phase state of the monolayer and on the ratio of the mixture components. It was found that the compact packing is the most dense if the fraction of arachidic acid does not exceed 20 % and the monolayer is compressed to pressures of 40-55 mN/m.
Speaker
Begletsova Nadejda
Saratov State University
Russia
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